142109408 has 36 divisors (see below), whose sum is σ = 325459512. Its totient is φ = 60903360.

The previous prime is 142109399. The next prime is 142109413. The reversal of 142109408 is 804901241.

It is a super-2 number, since 2×142109408² = 40390167684220928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43748 + ... + 46883.

It is an arithmetic number, because the mean of its divisors is an integer number (9040542).

Almost surely, 2^142109408 is an apocalyptic number.

It is an amenable number.

142109408 is an abundant number, since it is smaller than the sum of its proper divisors (183350104).

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

142109408 is an equidigital number, since it uses as much as digits as its factorization.

142109408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90655 (or 90640 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 142109408 is about 11920.9650616047. The cubic root of 142109408 is about 521.8442991633.

The spelling of 142109408 in words is "one hundred forty-two million, one hundred nine thousand, four hundred eight".