142042990 has 32 divisors (see below), whose sum is σ = 271918944. Its totient is φ = 53237760.

The previous prime is 142042987. The next prime is 142042991. The reversal of 142042990 is 99240241.

It is a happy number.

It is a super-2 number, since 2×142042990² = 40352422016280200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142042991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39237 + ... + 42703.

It is an arithmetic number, because the mean of its divisors is an integer number (8497467).

Almost surely, 2^142042990 is an apocalyptic number.

142042990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142042990 is a deficient number, since it is larger than the sum of its proper divisors (129875954).

142042990 is a wasteful number, since it uses less digits than its factorization.

142042990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3732.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 142042990 is about 11918.1789716382. The cubic root of 142042990 is about 521.7629879721.

The spelling of 142042990 in words is "one hundred forty-two million, forty-two thousand, nine hundred ninety".