2147857942 has 8 divisors (see below), whose sum is σ = 3222445896. Its totient is φ = 1073709312.

The previous prime is 2147857937. The next prime is 2147857951. The reversal of 2147857942 is 2497587412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2147857942² = 9226587478024950728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97323 + ... + 117334.

It is an arithmetic number, because the mean of its divisors is an integer number (402805737).

Almost surely, 2^2147857942 is an apocalyptic number.

2147857942 is a deficient number, since it is larger than the sum of its proper divisors (1074587954).

2147857942 is a wasteful number, since it uses less digits than its factorization.

2147857942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219662.

The product of its digits is 1128960, while the sum is 49.

The square root of 2147857942 is about 46344.9883158902. The cubic root of 2147857942 is about 1290.2341065017.

The spelling of 2147857942 in words is "two billion, one hundred forty-seven million, eight hundred fifty-seven thousand, nine hundred forty-two".