142261740 has 72 divisors (see below), whose sum is σ = 454250160. Its totient is φ = 35938944.

The previous prime is 142261727. The next prime is 142261747. The reversal of 142261740 is 47162241.

142261740 is a `hidden beast` number, since 1 + 4 + 2 + 2 + 617 + 40 = 666.

It is not an unprimeable number, because it can be changed into a prime (142261747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17379 + ... + 24218.

It is an arithmetic number, because the mean of its divisors is an integer number (6309030).

Almost surely, 2^142261740 is an apocalyptic number.

142261740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142261740 is an abundant number, since it is smaller than the sum of its proper divisors (311988420).

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

142261740 is a wasteful number, since it uses less digits than its factorization.

142261740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41631 (or 41626 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 142261740 is about 11927.3525981250. The cubic root of 142261740 is about 522.0306935755.

The spelling of 142261740 in words is "one hundred forty-two million, two hundred sixty-one thousand, seven hundred forty".