40520742 has 8 divisors (see below), whose sum is σ = 81041496. Its totient is φ = 13506912.

The previous prime is 40520737. The next prime is 40520761. The reversal of 40520742 is 24702504.

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

40520742 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3376723 + ... + 3376734.

It is an arithmetic number, because the mean of its divisors is an integer number (10130187).

Almost surely, 2^40520742 is an apocalyptic number.

40520742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40520742 is a wasteful number, since it uses less digits than its factorization.

40520742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6753462.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 40520742 is about 6365.5904675057. The cubic root of 40520742 is about 343.4728890883.

The spelling of 40520742 in words is "forty million, five hundred twenty thousand, seven hundred forty-two".