142649023 has 32 divisors (see below), whose sum is σ = 172860480. Its totient is φ = 116213760.

The previous prime is 142649021. The next prime is 142649027. The reversal of 142649023 is 320946241.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 142649023 - 2¹ = 142649021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142649021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 366513 + ... + 366901.

It is an arithmetic number, because the mean of its divisors is an integer number (5401890).

Almost surely, 2^142649023 is an apocalyptic number.

142649023 is a deficient number, since it is larger than the sum of its proper divisors (30211457).

142649023 is a wasteful number, since it uses less digits than its factorization.

142649023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 142649023 is about 11943.5766418607. The cubic root of 142649023 is about 522.5039771375.

The spelling of 142649023 in words is "one hundred forty-two million, six hundred forty-nine thousand, twenty-three".