402540422333252 has 24 divisors (see below), whose sum is σ = 832842253104960. Its totient is φ = 166568450620320.

The previous prime is 402540422333249. The next prime is 402540422333267. The reversal of 402540422333252 is 252333224045204.

It is a super-2 number, since 2×402540422333252² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247869717374 + ... + 247869718997.

It is an arithmetic number, because the mean of its divisors is an integer number (34701760546040).

Almost surely, 2^{402540422333252} is an apocalyptic number.

It is an amenable number.

402540422333252 is an abundant number, since it is smaller than the sum of its proper divisors (430301830771708).

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

402540422333252 is a wasteful number, since it uses less digits than its factorization.

402540422333252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495739436411 (or 495739436409 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 41.

Adding to 402540422333252 its reverse (252333224045204), we get a palindrome (654873646378456).

The spelling of 402540422333252 in words is "four hundred two trillion, five hundred forty billion, four hundred twenty-two million, three hundred thirty-three thousand, two hundred fifty-two".