403942 has 32 divisors (see below), whose sum is σ = 785664. Its totient is φ = 151200.

The previous prime is 403933. The next prime is 403951. The reversal of 403942 is 249304.

It is an interprime number because it is at equal distance from previous prime (403933) and next prime (403951).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6592 + ... + 6652.

It is an arithmetic number, because the mean of its divisors is an integer number (24552).

2⁴⁰³⁹⁴² is an apocalyptic number.

403942 is a deficient number, since it is larger than the sum of its proper divisors (381722).

403942 is a wasteful number, since it uses less digits than its factorization.

403942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 403942 is about 635.5643161789. The cubic root of 403942 is about 73.9218800628.

The spelling of 403942 in words is "four hundred three thousand, nine hundred forty-two".