1402372137420 has 144 divisors (see below), whose sum is σ = 4402183994208. Its totient is φ = 361080944640.

The previous prime is 1402372137389. The next prime is 1402372137451. The reversal of 1402372137420 is 247312732041.

1402372137420 is a `hidden beast` number, since 1 + 402 + 37 + 213 + 7 + 4 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1402372137389) and next prime (1402372137451).

It is a super-2 number, since 2×1402372137420² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68772 + ... + 1676148.

It is an arithmetic number, because the mean of its divisors is an integer number (30570722182).

Almost surely, 2^{1402372137420} is an apocalyptic number.

1402372137420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1402372137420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2201091997104).

1402372137420 is an abundant number, since it is smaller than the sum of its proper divisors (2999811856788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1402372137420 is a wasteful number, since it uses less digits than its factorization.

1402372137420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607560 (or 1607555 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

Adding to 1402372137420 its reverse (247312732041), we get a palindrome (1649684869461).

The spelling of 1402372137420 in words is "one trillion, four hundred two billion, three hundred seventy-two million, one hundred thirty-seven thousand, four hundred twenty".