402142 has 8 divisors (see below), whose sum is σ = 649656. Its totient is φ = 185592.

The previous prime is 402139. The next prime is 402197. The reversal of 402142 is 241204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7708 + ... + 7759.

It is an arithmetic number, because the mean of its divisors is an integer number (81207).

2⁴⁰²¹⁴² is an apocalyptic number.

402142 is a deficient number, since it is larger than the sum of its proper divisors (247514).

402142 is a wasteful number, since it uses less digits than its factorization.

402142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15482.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 402142 is about 634.1466707316. The cubic root of 402142 is about 73.8119158302.

Adding to 402142 its reverse (241204), we get a palindrome (643346).

The spelling of 402142 in words is "four hundred two thousand, one hundred forty-two", and thus it is an iban number.