401572142 has 4 divisors (see below), whose sum is σ = 602358216. Its totient is φ = 200786070.

The previous prime is 401572123. The next prime is 401572153. The reversal of 401572142 is 241275104.

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

It is a super-2 number, since 2×401572142² = 322520370460936328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100393034 + ... + 100393037.

It is an arithmetic number, because the mean of its divisors is an integer number (150589554).

Almost surely, 2^401572142 is an apocalyptic number.

401572142 is a deficient number, since it is larger than the sum of its proper divisors (200786074).

401572142 is a wasteful number, since it uses less digits than its factorization.

401572142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200786073.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 401572142 is about 20039.2650064816. The cubic root of 401572142 is about 737.7703412619.

The spelling of 401572142 in words is "four hundred one million, five hundred seventy-two thousand, one hundred forty-two".