142947870 has 64 divisors (see below), whose sum is σ = 374601024. Its totient is φ = 34698240.

The previous prime is 142947863. The next prime is 142947899. The reversal of 142947870 is 78749241.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25960 + ... + 30980.

It is an arithmetic number, because the mean of its divisors is an integer number (5853141).

Almost surely, 2^142947870 is an apocalyptic number.

142947870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 142947870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187300512).

142947870 is an abundant number, since it is smaller than the sum of its proper divisors (231653154).

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

142947870 is a wasteful number, since it uses less digits than its factorization.

142947870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5117.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 142947870 is about 11956.0808796194. The cubic root of 142947870 is about 522.8686012726.

The spelling of 142947870 in words is "one hundred forty-two million, nine hundred forty-seven thousand, eight hundred seventy".