142247976 has 96 divisors (see below), whose sum is σ = 407928960. Its totient is φ = 41174016.

The previous prime is 142247957. The next prime is 142247977. The reversal of 142247976 is 679742241.

It is not an unprimeable number, because it can be changed into a prime (142247977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67921 + ... + 69983.

It is an arithmetic number, because the mean of its divisors is an integer number (4249260).

Almost surely, 2^142247976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142247976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203964480).

142247976 is an abundant number, since it is smaller than the sum of its proper divisors (265680984).

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

142247976 is a wasteful number, since it uses less digits than its factorization.

142247976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115 (or 2098 counting only the distinct ones).

The product of its digits is 169344, while the sum is 42.

The square root of 142247976 is about 11926.7755910808. The cubic root of 142247976 is about 522.0138573265.

The spelling of 142247976 in words is "one hundred forty-two million, two hundred forty-seven thousand, nine hundred seventy-six".