142672440 has 32 divisors (see below), whose sum is σ = 428017680. Its totient is φ = 38045952.

The previous prime is 142672403. The next prime is 142672457. The reversal of 142672440 is 44276241.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 142672398 and 142672407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594349 + ... + 594588.

Almost surely, 2^142672440 is an apocalyptic number.

142672440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142672440 is an abundant number, since it is smaller than the sum of its proper divisors (285345240).

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

142672440 is a wasteful number, since it uses less digits than its factorization.

142672440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188951 (or 1188947 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 142672440 is about 11944.5569193671. The cubic root of 142672440 is about 522.5325666689.

The spelling of 142672440 in words is "one hundred forty-two million, six hundred seventy-two thousand, four hundred forty".