2578740142 has 12 divisors (see below), whose sum is σ = 4251724848. Its totient is φ = 1172154500.

The previous prime is 2578740139. The next prime is 2578740161. The reversal of 2578740142 is 2410478752.

It is a junction number, because it is equal to n+sod(n) for n = 2578740095 and 2578740104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5327734 + ... + 5328217.

It is an arithmetic number, because the mean of its divisors is an integer number (354310404).

Almost surely, 2^2578740142 is an apocalyptic number.

2578740142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2578740142 is a deficient number, since it is larger than the sum of its proper divisors (1672984706).

2578740142 is a wasteful number, since it uses less digits than its factorization.

2578740142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10655975 (or 10655964 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 40.

The square root of 2578740142 is about 50781.2971673627. The cubic root of 2578740142 is about 1371.3106859164.

The spelling of 2578740142 in words is "two billion, five hundred seventy-eight million, seven hundred forty thousand, one hundred forty-two".