5149749042 has 32 divisors (see below), whose sum is σ = 11614699200. Its totient is φ = 1690961184.

The previous prime is 5149748977. The next prime is 5149749079. The reversal of 5149749042 is 2409479415.

5149749042 is a `hidden beast` number, since 514 + 9 + 7 + 4 + 90 + 42 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 708067 + ... + 715302.

It is an arithmetic number, because the mean of its divisors is an integer number (362959350).

Almost surely, 2^5149749042 is an apocalyptic number.

5149749042 is an abundant number, since it is smaller than the sum of its proper divisors (6464950158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5149749042 is a wasteful number, since it uses less digits than its factorization.

5149749042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423447 (or 1423441 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 5149749042 is about 71761.7519434970. The cubic root of 5149749042 is about 1726.8794517127.

The spelling of 5149749042 in words is "five billion, one hundred forty-nine million, seven hundred forty-nine thousand, forty-two".