75124949 has 4 divisors (see below), whose sum is σ = 75276000. Its totient is φ = 74973900.

The previous prime is 75124943. The next prime is 75124961. The reversal of 75124949 is 94942157.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94942157 = 3889 ⋅24413.

It is a cyclic number.

It is not a de Polignac number, because 75124949 - 2²⁴ = 58347733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75124943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74777 + ... + 75774.

It is an arithmetic number, because the mean of its divisors is an integer number (18819000).

Almost surely, 2^75124949 is an apocalyptic number.

It is an amenable number.

75124949 is a deficient number, since it is larger than the sum of its proper divisors (151051).

75124949 is a wasteful number, since it uses less digits than its factorization.

75124949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151050.

The product of its digits is 90720, while the sum is 41.

The square root of 75124949 is about 8667.4649696437. The cubic root of 75124949 is about 421.9503939804.

The spelling of 75124949 in words is "seventy-five million, one hundred twenty-four thousand, nine hundred forty-nine".