401023442 has 4 divisors (see below), whose sum is σ = 601535166. Its totient is φ = 200511720.

The previous prime is 401023433. The next prime is 401023451. The reversal of 401023442 is 244320104.

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 (401023433) and next prime (401023451).

It can be written as a sum of positive squares in only one way, i.e., 339259561 + 61763881 = 18419^2 + 7859^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100255859 + ... + 100255862.

Almost surely, 2^401023442 is an apocalyptic number.

401023442 is a deficient number, since it is larger than the sum of its proper divisors (200511724).

401023442 is a wasteful number, since it uses less digits than its factorization.

401023442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200511723.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 401023442 is about 20025.5697047550. The cubic root of 401023442 is about 737.4341633080.

Adding to 401023442 its reverse (244320104), we get a palindrome (645343546).

The spelling of 401023442 in words is "four hundred one million, twenty-three thousand, four hundred forty-two".