2499779942 has 8 divisors (see below), whose sum is σ = 4090549032. Its totient is φ = 1136263600.

The previous prime is 2499779941. The next prime is 2499779957.

2499779942 is nontrivially palindromic in base 10.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2499779941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56813159 + ... + 56813202.

It is an arithmetic number, because the mean of its divisors is an integer number (511318629).

Almost surely, 2^2499779942 is an apocalyptic number.

2499779942 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2499779942 is a deficient number, since it is larger than the sum of its proper divisors (1590769090).

2499779942 is a wasteful number, since it uses less digits than its factorization.

2499779942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113626374.

The product of its digits is 20575296, while the sum is 62.

The square root of 2499779942 is about 49997.7993715723. The cubic root of 2499779942 is about 1357.1689851749.

The spelling of 2499779942 in words is "two billion, four hundred ninety-nine million, seven hundred seventy-nine thousand, nine hundred forty-two".