20442995 has 4 divisors (see below), whose sum is σ = 24531600. Its totient is φ = 16354392.

The previous prime is 20442977. The next prime is 20442997. The reversal of 20442995 is 59924402.

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

It is a cyclic number.

It is not a de Polignac number, because 20442995 - 2⁸ = 20442739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20442997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2044295 + ... + 2044304.

It is an arithmetic number, because the mean of its divisors is an integer number (6132900).

Almost surely, 2^20442995 is an apocalyptic number.

20442995 is a deficient number, since it is larger than the sum of its proper divisors (4088605).

20442995 is an equidigital number, since it uses as much as digits as its factorization.

20442995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4088604.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 20442995 is about 4521.3930375494. The cubic root of 20442995 is about 273.4312665463.

The spelling of 20442995 in words is "twenty million, four hundred forty-two thousand, nine hundred ninety-five".