142690 has 16 divisors (see below), whose sum is σ = 270720. Its totient is φ = 54000.

The previous prime is 142673. The next prime is 142697. The reversal of 142690 is 96241.

It is a super-2 number, since 2×142690² = 40720872200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142697) by changing a digit.

142690 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186 + ... + 565.

It is an arithmetic number, because the mean of its divisors is an integer number (16920).

2¹⁴²⁶⁹⁰ is an apocalyptic number.

142690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142690 is a deficient number, since it is larger than the sum of its proper divisors (128030).

142690 is a wasteful number, since it uses less digits than its factorization.

142690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 142690 is about 377.7432990802. The cubic root of 142690 is about 52.2554003408.

It can be divided in two parts, 14 and 2690, that added together give a square (2704 = 52²).

The spelling of 142690 in words is "one hundred forty-two thousand, six hundred ninety".