142446464 has 32 divisors (see below), whose sum is σ = 290712240. Its totient is φ = 69483520.

The previous prime is 142446449. The next prime is 142446467. The reversal of 142446464 is 464644241.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×142446464² = 40581990212206592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142446467) 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 3 ways as a sum of consecutive naturals, for example, 8324 + ... + 18819.

Almost surely, 2^142446464 is an apocalyptic number.

It is an amenable number.

142446464 is an abundant number, since it is smaller than the sum of its proper divisors (148265776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142446464 is an equidigital number, since it uses as much as digits as its factorization.

142446464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27198 (or 27186 counting only the distinct ones).

The product of its digits is 73728, while the sum is 35.

The square root of 142446464 is about 11935.0937993800. The cubic root of 142446464 is about 522.2565446248.

The spelling of 142446464 in words is "one hundred forty-two million, four hundred forty-six thousand, four hundred sixty-four".