2499774142 has 4 divisors (see below), whose sum is σ = 3749661216. Its totient is φ = 1249887070.

The previous prime is 2499774107. The next prime is 2499774143. The reversal of 2499774142 is 2414779942.

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

It is a super-2 number, since 2×2499774142² = 12497741522023672328, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2499774143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624943534 + ... + 624943537.

It is an arithmetic number, because the mean of its divisors is an integer number (937415304).

Almost surely, 2^2499774142 is an apocalyptic number.

2499774142 is a deficient number, since it is larger than the sum of its proper divisors (1249887074).

2499774142 is a wasteful number, since it uses less digits than its factorization.

2499774142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249887073.

The product of its digits is 1016064, while the sum is 49.

The square root of 2499774142 is about 49997.7413689859. The cubic root of 2499774142 is about 1357.1679355376.

The spelling of 2499774142 in words is "two billion, four hundred ninety-nine million, seven hundred seventy-four thousand, one hundred forty-two".