405797142 has 16 divisors (see below), whose sum is σ = 846881280. Its totient is φ = 129384552.

The previous prime is 405797137. The next prime is 405797143. The reversal of 405797142 is 241797504.

It is a self number, because there is not a number n which added to its sum of digits gives 405797142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405797143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1470142 + ... + 1470417.

It is an arithmetic number, because the mean of its divisors is an integer number (52930080).

Almost surely, 2^405797142 is an apocalyptic number.

405797142 is an abundant number, since it is smaller than the sum of its proper divisors (441084138).

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

405797142 is a wasteful number, since it uses less digits than its factorization.

405797142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2940587.

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 405797142 is about 20144.4072139142. The cubic root of 405797142 is about 740.3487168237.

The spelling of 405797142 in words is "four hundred five million, seven hundred ninety-seven thousand, one hundred forty-two".