2978274142 has 4 divisors (see below), whose sum is σ = 4467411216. Its totient is φ = 1489137070.

The previous prime is 2978274139. The next prime is 2978274181. The reversal of 2978274142 is 2414728792.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2978274092 and 2978274101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744568534 + ... + 744568537.

It is an arithmetic number, because the mean of its divisors is an integer number (1116852804).

Almost surely, 2^2978274142 is an apocalyptic number.

2978274142 is a deficient number, since it is larger than the sum of its proper divisors (1489137074).

2978274142 is a wasteful number, since it uses less digits than its factorization.

2978274142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489137073.

The product of its digits is 451584, while the sum is 46.

The square root of 2978274142 is about 54573.5663302299. The cubic root of 2978274142 is about 1438.7595641729.

The spelling of 2978274142 in words is "two billion, nine hundred seventy-eight million, two hundred seventy-four thousand, one hundred forty-two".