406452140 has 12 divisors (see below), whose sum is σ = 853549536. Its totient is φ = 162580848.

The previous prime is 406452103. The next prime is 406452143. The reversal of 406452140 is 41254604.

It is a super-2 number, since 2×406452140² = 330406684221159200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (406452143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10161284 + ... + 10161323.

It is an arithmetic number, because the mean of its divisors is an integer number (71129128).

Almost surely, 2^406452140 is an apocalyptic number.

It is an amenable number.

406452140 is an abundant number, since it is smaller than the sum of its proper divisors (447097396).

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

406452140 is a wasteful number, since it uses less digits than its factorization.

406452140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20322616 (or 20322614 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 406452140 is about 20160.6582233815. The cubic root of 406452140 is about 740.7468354937.

The spelling of 406452140 in words is "four hundred six million, four hundred fifty-two thousand, one hundred forty".