40742472438 has 24 divisors (see below), whose sum is σ = 88313877288. Its totient is φ = 13574897952.

The previous prime is 40742472409. The next prime is 40742472439. The reversal of 40742472438 is 83427424704.

It is a super-2 number, since 2×40742472438² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40742472393 and 40742472402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40742472439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 451356 + ... + 534047.

It is an arithmetic number, because the mean of its divisors is an integer number (3679744887).

Almost surely, 2^40742472438 is an apocalyptic number.

40742472438 is an abundant number, since it is smaller than the sum of its proper divisors (47571404850).

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

40742472438 is a wasteful number, since it uses less digits than its factorization.

40742472438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987708 (or 987705 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 45.

The spelling of 40742472438 in words is "forty billion, seven hundred forty-two million, four hundred seventy-two thousand, four hundred thirty-eight".