635942 has 4 divisors (see below), whose sum is σ = 953916. Its totient is φ = 317970.

The previous prime is 635939. The next prime is 635959. The reversal of 635942 is 249536.

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

It is a nialpdrome in base 15.

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, 158984 + ... + 158987.

It is an arithmetic number, because the mean of its divisors is an integer number (238479).

2⁶³⁵⁹⁴² is an apocalyptic number.

635942 is a deficient number, since it is larger than the sum of its proper divisors (317974).

635942 is a wasteful number, since it uses less digits than its factorization.

635942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317973.

The product of its digits is 6480, while the sum is 29.

The square root of 635942 is about 797.4597168510. The cubic root of 635942 is about 85.9948617806.

The spelling of 635942 in words is "six hundred thirty-five thousand, nine hundred forty-two".