49638242 has 4 divisors (see below), whose sum is σ = 74457366. Its totient is φ = 24819120.

The previous prime is 49638221. The next prime is 49638247. The reversal of 49638242 is 24283694.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24283694 = 2 ⋅12141847.

It can be written as a sum of positive squares in only one way, i.e., 47596201 + 2042041 = 6899^2 + 1429^2 .

It is a junction number, because it is equal to n+sod(n) for n = 49638196 and 49638205.

It is not an unprimeable number, because it can be changed into a prime (49638247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12409559 + ... + 12409562.

Almost surely, 2^49638242 is an apocalyptic number.

49638242 is a deficient number, since it is larger than the sum of its proper divisors (24819124).

49638242 is a wasteful number, since it uses less digits than its factorization.

49638242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24819123.

The product of its digits is 82944, while the sum is 38.

The square root of 49638242 is about 7045.4412211018. The cubic root of 49638242 is about 367.5125131871.

The spelling of 49638242 in words is "forty-nine million, six hundred thirty-eight thousand, two hundred forty-two".