20337242 has 4 divisors (see below), whose sum is σ = 30505866. Its totient is φ = 10168620.

The previous prime is 20337199. The next prime is 20337269. The reversal of 20337242 is 24273302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24273302 = 2 ⋅12136651.

It can be written as a sum of positive squares in only one way, i.e., 16491721 + 3845521 = 4061^2 + 1961^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5084309 + ... + 5084312.

Almost surely, 2^20337242 is an apocalyptic number.

20337242 is a deficient number, since it is larger than the sum of its proper divisors (10168624).

20337242 is a wasteful number, since it uses less digits than its factorization.

20337242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10168623.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 20337242 is about 4509.6831374277. The cubic root of 20337242 is about 272.9589583497.

The spelling of 20337242 in words is "twenty million, three hundred thirty-seven thousand, two hundred forty-two".