401232142 has 4 divisors (see below), whose sum is σ = 601848216. Its totient is φ = 200616070.

The previous prime is 401232133. The next prime is 401232157. The reversal of 401232142 is 241232104.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100308034 + ... + 100308037.

It is an arithmetic number, because the mean of its divisors is an integer number (150462054).

Almost surely, 2^401232142 is an apocalyptic number.

401232142 is a deficient number, since it is larger than the sum of its proper divisors (200616074).

401232142 is a wasteful number, since it uses less digits than its factorization.

401232142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200616073.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 401232142 is about 20030.7798649978. The cubic root of 401232142 is about 737.5620659055.

Adding to 401232142 its reverse (241232104), we get a palindrome (642464246).

The spelling of 401232142 in words is "four hundred one million, two hundred thirty-two thousand, one hundred forty-two".