442026157 has 2 divisors, whose sum is σ = 442026158. Its totient is φ = 442026156.

The previous prime is 442026139. The next prime is 442026173. The reversal of 442026157 is 751620244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 426257316 + 15768841 = 20646^2 + 3971^2 .

It is a cyclic number.

It is not a de Polignac number, because 442026157 - 2¹⁹ = 441501869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442026107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221013078 + 221013079.

It is an arithmetic number, because the mean of its divisors is an integer number (221013079).

Almost surely, 2^442026157 is an apocalyptic number.

It is an amenable number.

442026157 is a deficient number, since it is larger than the sum of its proper divisors (1).

442026157 is an equidigital number, since it uses as much as digits as its factorization.

442026157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 442026157 is about 21024.4181132321. The cubic root of 442026157 is about 761.7561863052.

The spelling of 442026157 in words is "four hundred forty-two million, twenty-six thousand, one hundred fifty-seven".