1402344420 has 96 divisors (see below), whose sum is σ = 3974541312. Its totient is φ = 369422208.

The previous prime is 1402344413. The next prime is 1402344421. The reversal of 1402344420 is 244432041.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1402344421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2180619 + ... + 2181261.

It is an arithmetic number, because the mean of its divisors is an integer number (41401472).

Almost surely, 2^1402344420 is an apocalyptic number.

1402344420 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 1402344420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1987270656).

1402344420 is an abundant number, since it is smaller than the sum of its proper divisors (2572196892).

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

1402344420 is a wasteful number, since it uses less digits than its factorization.

1402344420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041 (or 1039 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1402344420 is about 37447.8893931287. The cubic root of 1402344420 is about 1119.3130406824.

Adding to 1402344420 its reverse (244432041), we get a palindrome (1646776461).

The spelling of 1402344420 in words is "one billion, four hundred two million, three hundred forty-four thousand, four hundred twenty".