49249143 has 24 divisors (see below), whose sum is σ = 73055840. Its totient is φ = 31959360.

The previous prime is 49249139. The next prime is 49249157. The reversal of 49249143 is 34194294.

It is not a de Polignac number, because 49249143 - 2² = 49249139 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49249098 and 49249107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49249133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59430 + ... + 60252.

Almost surely, 2^49249143 is an apocalyptic number.

49249143 is a deficient number, since it is larger than the sum of its proper divisors (23806697).

49249143 is a wasteful number, since it uses less digits than its factorization.

49249143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999 (or 996 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 49249143 is about 7017.7733648216. The cubic root of 49249143 is about 366.5497203722.

The spelling of 49249143 in words is "forty-nine million, two hundred forty-nine thousand, one hundred forty-three".