142664990 has 16 divisors (see below), whose sum is σ = 276550848. Its totient is φ = 52676256.

The previous prime is 142664987. The next prime is 142664993. The reversal of 142664990 is 99466241.

It is an interprime number because it is at equal distance from previous prime (142664987) and next prime (142664993).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142664993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548582 + ... + 548841.

It is an arithmetic number, because the mean of its divisors is an integer number (17284428).

Almost surely, 2^142664990 is an apocalyptic number.

142664990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142664990 is a deficient number, since it is larger than the sum of its proper divisors (133885858).

142664990 is a wasteful number, since it uses less digits than its factorization.

142664990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097443.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 142664990 is about 11944.2450577674. The cubic root of 142664990 is about 522.5234713936.

The spelling of 142664990 in words is "one hundred forty-two million, six hundred sixty-four thousand, nine hundred ninety".