442075402 has 4 divisors (see below), whose sum is σ = 663113106. Its totient is φ = 221037700.

The previous prime is 442075393. The next prime is 442075411. The reversal of 442075402 is 204570244.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (442075393) and next prime (442075411).

It can be written as a sum of positive squares in only one way, i.e., 385690321 + 56385081 = 19639^2 + 7509^2 .

It is a super-2 number, since 2×442075402² = 390861322106923208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110518849 + ... + 110518852.

Almost surely, 2^442075402 is an apocalyptic number.

442075402 is a deficient number, since it is larger than the sum of its proper divisors (221037704).

442075402 is a wasteful number, since it uses less digits than its factorization.

442075402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221037703.

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 442075402 is about 21025.5892188542. The cubic root of 442075402 is about 761.7844736888.

The spelling of 442075402 in words is "four hundred forty-two million, seventy-five thousand, four hundred two".