40742730 has 64 divisors (see below), whose sum is σ = 124174080. Its totient is φ = 9312192.

The previous prime is 40742717. The next prime is 40742753. The reversal of 40742730 is 3724704.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 40742694 and 40742703.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8889 + ... + 12668.

It is an arithmetic number, because the mean of its divisors is an integer number (1940220).

Almost surely, 2^40742730 is an apocalyptic number.

40742730 is an abundant number, since it is smaller than the sum of its proper divisors (83431350).

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

40742730 is a wasteful number, since it uses less digits than its factorization.

40742730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21580 (or 21574 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 40742730 is about 6383.0032116552. The cubic root of 40742730 is about 344.0989721079.

The spelling of 40742730 in words is "forty million, seven hundred forty-two thousand, seven hundred thirty".