40921742 has 4 divisors (see below), whose sum is σ = 61382616. Its totient is φ = 20460870.

The previous prime is 40921733. The next prime is 40921753. The reversal of 40921742 is 24712904.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10230434 + ... + 10230437.

It is an arithmetic number, because the mean of its divisors is an integer number (15345654).

Almost surely, 2^40921742 is an apocalyptic number.

40921742 is a deficient number, since it is larger than the sum of its proper divisors (20460874).

40921742 is a wasteful number, since it uses less digits than its factorization.

40921742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20460873.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 40921742 is about 6397.0103954894. The cubic root of 40921742 is about 344.6021935847.

The spelling of 40921742 in words is "forty million, nine hundred twenty-one thousand, seven hundred forty-two".