442040429 has 2 divisors, whose sum is σ = 442040430. Its totient is φ = 442040428.

The previous prime is 442040407. The next prime is 442040441. The reversal of 442040429 is 924040244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 424442404 + 17598025 = 20602^2 + 4195^2 .

It is a cyclic number.

It is not a de Polignac number, because 442040429 - 2⁸ = 442040173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442030429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221020214 + 221020215.

It is an arithmetic number, because the mean of its divisors is an integer number (221020215).

Almost surely, 2^442040429 is an apocalyptic number.

It is an amenable number.

442040429 is a deficient number, since it is larger than the sum of its proper divisors (1).

442040429 is an equidigital number, since it uses as much as digits as its factorization.

442040429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 442040429 is about 21024.7575253557. The cubic root of 442040429 is about 761.7643846641.

The spelling of 442040429 in words is "four hundred forty-two million, forty thousand, four hundred twenty-nine".