40642534 has 8 divisors (see below), whose sum is σ = 61233048. Its totient is φ = 20231520.

The previous prime is 40642517. The next prime is 40642549. The reversal of 40642534 is 43524604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44307 + ... + 45214.

It is an arithmetic number, because the mean of its divisors is an integer number (7654131).

Almost surely, 2^40642534 is an apocalyptic number.

40642534 is a deficient number, since it is larger than the sum of its proper divisors (20590514).

40642534 is a wasteful number, since it uses less digits than its factorization.

40642534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89750.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 40642534 is about 6375.1497237320. The cubic root of 40642534 is about 343.8166670036.

The spelling of 40642534 in words is "forty million, six hundred forty-two thousand, five hundred thirty-four".