142761840 has 80 divisors (see below), whose sum is σ = 476615328. Its totient is φ = 35140608.

The previous prime is 142761823. The next prime is 142761847. The reversal of 142761840 is 48167241.

142761840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142761847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19759 + ... + 25998.

Almost surely, 2^142761840 is an apocalyptic number.

142761840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142761840 is an abundant number, since it is smaller than the sum of its proper divisors (333853488).

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

142761840 is a wasteful number, since it uses less digits than its factorization.

142761840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45786 (or 45780 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 142761840 is about 11948.2986236535. The cubic root of 142761840 is about 522.6416852850.

The spelling of 142761840 in words is "one hundred forty-two million, seven hundred sixty-one thousand, eight hundred forty".