406112021252 has 48 divisors (see below), whose sum is σ = 859402803840. Its totient is φ = 164033206272.

The previous prime is 406112021213. The next prime is 406112021317. The reversal of 406112021252 is 252120211604.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1874963 + ... + 2080314.

It is an arithmetic number, because the mean of its divisors is an integer number (17904225080).

Almost surely, 2^406112021252 is an apocalyptic number.

It is an amenable number.

406112021252 is an abundant number, since it is smaller than the sum of its proper divisors (453290782588).

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

406112021252 is a wasteful number, since it uses less digits than its factorization.

406112021252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3955500 (or 3955498 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 406112021252 its reverse (252120211604), we get a palindrome (658232232856).

The spelling of 406112021252 in words is "four hundred six billion, one hundred twelve million, twenty-one thousand, two hundred fifty-two".