247949949742 has 16 divisors (see below), whose sum is σ = 411294315312. Its totient is φ = 111160624320.

The previous prime is 247949949721. The next prime is 247949949749.

247949949742 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×247949949742² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247949949749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77193273 + ... + 77196484.

It is an arithmetic number, because the mean of its divisors is an integer number (25705894707).

Almost surely, 2^247949949742 is an apocalyptic number.

247949949742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

247949949742 is a deficient number, since it is larger than the sum of its proper divisors (163344365570).

247949949742 is a wasteful number, since it uses less digits than its factorization.

247949949742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154389843.

The product of its digits is 329204736, while the sum is 70.

The spelling of 247949949742 in words is "two hundred forty-seven billion, nine hundred forty-nine million, nine hundred forty-nine thousand, seven hundred forty-two".