49742145 has 24 divisors (see below), whose sum is σ = 87637992. Its totient is φ = 26092800.

The previous prime is 49742129. The next prime is 49742179. The reversal of 49742145 is 54124794.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 166464 + 49575681 = 408^2 + 7041^2 .

It is not a de Polignac number, because 49742145 - 2⁴ = 49742129 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6316 + ... + 11805.

It is an arithmetic number, because the mean of its divisors is an integer number (3651583).

Almost surely, 2^49742145 is an apocalyptic number.

49742145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

49742145 is a deficient number, since it is larger than the sum of its proper divisors (37895847).

49742145 is a wasteful number, since it uses less digits than its factorization.

49742145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18193 (or 18190 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 49742145 is about 7052.8111416654. The cubic root of 49742145 is about 367.7687607803.

The spelling of 49742145 in words is "forty-nine million, seven hundred forty-two thousand, one hundred forty-five".