142677640 has 32 divisors (see below), whose sum is σ = 366886080. Its totient is φ = 48917952.

The previous prime is 142677629. The next prime is 142677653. The reversal of 142677640 is 46776241.

142677640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 142677640.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254502 + ... + 255061.

It is an arithmetic number, because the mean of its divisors is an integer number (11465190).

Almost surely, 2^142677640 is an apocalyptic number.

142677640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142677640 is an abundant number, since it is smaller than the sum of its proper divisors (224208440).

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

142677640 is a wasteful number, since it uses less digits than its factorization.

142677640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509581 (or 509577 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 142677640 is about 11944.7745897526. The cubic root of 142677640 is about 522.5389148614.

It can be divided in two parts, 1426 and 77640, that multiplied together give a triangular number (110714640 = T₁₄₈₈₀).

The spelling of 142677640 in words is "one hundred forty-two million, six hundred seventy-seven thousand, six hundred forty".