142761740 has 24 divisors (see below), whose sum is σ = 327054672. Its totient is φ = 51913280.

The previous prime is 142761737. The next prime is 142761761. The reversal of 142761740 is 47167241.

It is a junction number, because it is equal to n+sod(n) for n = 142761697 and 142761706.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324239 + ... + 324678.

It is an arithmetic number, because the mean of its divisors is an integer number (13627278).

Almost surely, 2^142761740 is an apocalyptic number.

142761740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142761740 is an abundant number, since it is smaller than the sum of its proper divisors (184292932).

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

142761740 is a wasteful number, since it uses less digits than its factorization.

142761740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648937 (or 648935 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 142761740 is about 11948.2944389565. The cubic root of 142761740 is about 522.6415632539.

The spelling of 142761740 in words is "one hundred forty-two million, seven hundred sixty-one thousand, seven hundred forty".