142197740 has 12 divisors (see below), whose sum is σ = 298615296. Its totient is φ = 56879088.

The previous prime is 142197739. The next prime is 142197751. The reversal of 142197740 is 47791241.

It is a super-2 number, since 2×142197740² = 40440394522215200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142197740.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3554924 + ... + 3554963.

It is an arithmetic number, because the mean of its divisors is an integer number (24884608).

Almost surely, 2^142197740 is an apocalyptic number.

142197740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142197740 is an abundant number, since it is smaller than the sum of its proper divisors (156417556).

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

142197740 is a wasteful number, since it uses less digits than its factorization.

142197740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7109896 (or 7109894 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 142197740 is about 11924.6693874505. The cubic root of 142197740 is about 521.9523989810.

The spelling of 142197740 in words is "one hundred forty-two million, one hundred ninety-seven thousand, seven hundred forty".