20374742 has 4 divisors (see below), whose sum is σ = 30562116. Its totient is φ = 10187370.

The previous prime is 20374723. The next prime is 20374763. The reversal of 20374742 is 24747302.

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

It is a super-2 number, since 2×20374742² = 830260223133128, which contains 22 as substring.

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, 5093684 + ... + 5093687.

It is an arithmetic number, because the mean of its divisors is an integer number (7640529).

Almost surely, 2^20374742 is an apocalyptic number.

20374742 is a deficient number, since it is larger than the sum of its proper divisors (10187374).

20374742 is a wasteful number, since it uses less digits than its factorization.

20374742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10187373.

The product of its (nonzero) digits is 9408, while the sum is 29.

The square root of 20374742 is about 4513.8389426297. The cubic root of 20374742 is about 273.1266257254.

The spelling of 20374742 in words is "twenty million, three hundred seventy-four thousand, seven hundred forty-two".