142977930 has 16 divisors (see below), whose sum is σ = 343147104. Its totient is φ = 38127440.

The previous prime is 142977911. The next prime is 142977931. The reversal of 142977930 is 39779241.

It is not an unprimeable number, because it can be changed into a prime (142977931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2382936 + ... + 2382995.

It is an arithmetic number, because the mean of its divisors is an integer number (21446694).

Almost surely, 2^142977930 is an apocalyptic number.

142977930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142977930 is an abundant number, since it is smaller than the sum of its proper divisors (200169174).

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

142977930 is a wasteful number, since it uses less digits than its factorization.

142977930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4765941.

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 142977930 is about 11957.3379144356. The cubic root of 142977930 is about 522.9052494311.

The spelling of 142977930 in words is "one hundred forty-two million, nine hundred seventy-seven thousand, nine hundred thirty".