442401012 has 18 divisors (see below), whose sum is σ = 1118291538. Its totient is φ = 147466992.

The previous prime is 442400983. The next prime is 442401053. The reversal of 442401012 is 210104244.

It can be written as a sum of positive squares in only one way, i.e., 429484176 + 12916836 = 20724^2 + 3594^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6144423 + ... + 6144494.

Almost surely, 2^442401012 is an apocalyptic number.

It is an amenable number.

442401012 is an abundant number, since it is smaller than the sum of its proper divisors (675890526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442401012 is a wasteful number, since it uses less digits than its factorization.

442401012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12288927 (or 12288922 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 442401012 is about 21033.3309772846. The cubic root of 442401012 is about 761.9714582072.

Adding to 442401012 its reverse (210104244), we get a palindrome (652505256).

The spelling of 442401012 in words is "four hundred forty-two million, four hundred one thousand, twelve".