402053316240 has 160 divisors (see below), whose sum is σ = 1254185726976. Its totient is φ = 106542397440.

The previous prime is 402053316229. The next prime is 402053316263. The reversal of 402053316240 is 42613350204.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 402053316198 and 402053316207.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79188582 + ... + 79193658.

Almost surely, 2^402053316240 is an apocalyptic number.

402053316240 is a gapful number since it is divisible by the number (40) 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 402053316240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (627092863488).

402053316240 is an abundant number, since it is smaller than the sum of its proper divisors (852132410736).

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

402053316240 is a wasteful number, since it uses less digits than its factorization.

402053316240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7097 (or 7091 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 402053316240 its reverse (42613350204), we get a palindrome (444666666444).

The spelling of 402053316240 in words is "four hundred two billion, fifty-three million, three hundred sixteen thousand, two hundred forty".