40352421252 has 48 divisors (see below), whose sum is σ = 110616432192. Its totient is φ = 11287390080.

The previous prime is 40352421209. The next prime is 40352421257. The reversal of 40352421252 is 25212425304.

It is a super-2 number, since 2×40352421252² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40352421257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11755983 + ... + 11759414.

It is an arithmetic number, because the mean of its divisors is an integer number (2304509004).

Almost surely, 2^40352421252 is an apocalyptic number.

It is an amenable number.

40352421252 is an abundant number, since it is smaller than the sum of its proper divisors (70264010940).

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

40352421252 is a wasteful number, since it uses less digits than its factorization.

40352421252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23515428 (or 23515426 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 40352421252 its reverse (25212425304), we get a palindrome (65564846556).

The spelling of 40352421252 in words is "forty billion, three hundred fifty-two million, four hundred twenty-one thousand, two hundred fifty-two".