401204142 has 12 divisors (see below), whose sum is σ = 869275680. Its totient is φ = 133734708.

The previous prime is 401204129. The next prime is 401204197. The reversal of 401204142 is 241402104.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 22289119 = 401204142 / (4 + 0 + 1 + 2 + 0 + 4 + 1 + 4 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11144542 + ... + 11144577.

It is an arithmetic number, because the mean of its divisors is an integer number (72439640).

Almost surely, 2^401204142 is an apocalyptic number.

401204142 is an abundant number, since it is smaller than the sum of its proper divisors (468071538).

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

401204142 is a wasteful number, since it uses less digits than its factorization.

401204142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22289127 (or 22289124 counting only the distinct ones).

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

The square root of 401204142 is about 20030.0809284436. The cubic root of 401204142 is about 737.5449085743.

Adding to 401204142 its reverse (241402104), we get a palindrome (642606246).

The spelling of 401204142 in words is "four hundred one million, two hundred four thousand, one hundred forty-two".