40657245342 has 64 divisors (see below), whose sum is σ = 97876753920. Its totient is φ = 10998802944.

The previous prime is 40657245341. The next prime is 40657245347. The reversal of 40657245342 is 24354275604.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 40657245294 and 40657245303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40657245341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1513258 + ... + 1539890.

It is an arithmetic number, because the mean of its divisors is an integer number (1529324280).

Almost surely, 2^40657245342 is an apocalyptic number.

40657245342 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 40657245342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48938376960).

40657245342 is an abundant number, since it is smaller than the sum of its proper divisors (57219508578).

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

40657245342 is a wasteful number, since it uses less digits than its factorization.

40657245342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28577.

The product of its (nonzero) digits is 806400, while the sum is 42.

The spelling of 40657245342 in words is "forty billion, six hundred fifty-seven million, two hundred forty-five thousand, three hundred forty-two".