49999842 has 20 divisors (see below), whose sum is σ = 112037046. Its totient is φ = 16666560.

The previous prime is 49999819. The next prime is 49999843. The reversal of 49999842 is 24899994.

It can be written as a sum of positive squares in only one way, i.e., 47900241 + 2099601 = 6921^2 + 1449^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (49999843) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 154159 + ... + 154482.

Almost surely, 2^49999842 is an apocalyptic number.

49999842 is an abundant number, since it is smaller than the sum of its proper divisors (62037204).

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

49999842 is a wasteful number, since it uses less digits than its factorization.

49999842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308655 (or 308646 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 49999842 is about 7071.0566395695. The cubic root of 49999842 is about 368.4027618123.

It can be divided in two parts, 4999 and 9842, that added together give a palindrome (14841).

The spelling of 49999842 in words is "forty-nine million, nine hundred ninety-nine thousand, eight hundred forty-two".