20137742 has 16 divisors (see below), whose sum is σ = 31642272. Its totient is φ = 9593760.

The previous prime is 20137729. The next prime is 20137753. The reversal of 20137742 is 24773102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13892 + ... + 15272.

It is an arithmetic number, because the mean of its divisors is an integer number (1977642).

Almost surely, 2^20137742 is an apocalyptic number.

20137742 is a deficient number, since it is larger than the sum of its proper divisors (11504530).

20137742 is a wasteful number, since it uses less digits than its factorization.

20137742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 20137742 is about 4487.5095543074. The cubic root of 20137742 is about 272.0634853975.

The spelling of 20137742 in words is "twenty million, one hundred thirty-seven thousand, seven hundred forty-two".