1402320240 has 60 divisors (see below), whose sum is σ = 4709461224. Its totient is φ = 373951872.

The previous prime is 1402320233. The next prime is 1402320263. The reversal of 1402320240 is 420232041.

1402320240 is a `hidden beast` number, since 1 + 402 + 3 + 20 + 240 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 973114 + ... + 974553.

Almost surely, 2^1402320240 is an apocalyptic number.

1402320240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1402320240 is an abundant number, since it is smaller than the sum of its proper divisors (3307140984).

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

1402320240 is a wasteful number, since it uses less digits than its factorization.

1402320240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947686 (or 1947677 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1402320240 is about 37447.5665431013. The cubic root of 1402320240 is about 1119.3066073735.

Adding to 1402320240 its reverse (420232041), we get a palindrome (1822552281).

The spelling of 1402320240 in words is "one billion, four hundred two million, three hundred twenty thousand, two hundred forty".