40423506 has 24 divisors (see below), whose sum is σ = 83741424. Its totient is φ = 13008240.

The previous prime is 40423459. The next prime is 40423517. The reversal of 40423506 is 60532404.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1041 + ... + 9051.

It is an arithmetic number, because the mean of its divisors is an integer number (3489226).

Almost surely, 2^40423506 is an apocalyptic number.

40423506 is an abundant number, since it is smaller than the sum of its proper divisors (43317918).

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

40423506 is a wasteful number, since it uses less digits than its factorization.

40423506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8074 (or 8045 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 40423506 is about 6357.9482539574. The cubic root of 40423506 is about 343.1979296608.

The spelling of 40423506 in words is "forty million, four hundred twenty-three thousand, five hundred six".