49999142 has 16 divisors (see below), whose sum is σ = 79678080. Its totient is φ = 23449728.

The previous prime is 49999133. The next prime is 49999151. The reversal of 49999142 is 24199994.

It is an interprime number because it is at equal distance from previous prime (49999133) and next prime (49999151).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8459 + ... + 13097.

It is an arithmetic number, because the mean of its divisors is an integer number (4979880).

Almost surely, 2^49999142 is an apocalyptic number.

49999142 is a deficient number, since it is larger than the sum of its proper divisors (29678938).

49999142 is a wasteful number, since it uses less digits than its factorization.

49999142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4975.

The product of its digits is 209952, while the sum is 47.

The square root of 49999142 is about 7071.0071418434. The cubic root of 49999142 is about 368.4010425860.

It can be divided in two parts, 4999 and 9142, that added together give a palindrome (14141).

The spelling of 49999142 in words is "forty-nine million, nine hundred ninety-nine thousand, one hundred forty-two".