75123258421 has 8 divisors (see below), whose sum is σ = 79559481024. Its totient is φ = 70784535360.

The previous prime is 75123258407. The next prime is 75123258437. The reversal of 75123258421 is 12485232157.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75123258421 - 2¹³ = 75123250229 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 (75123258491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24373300 + ... + 24376381.

It is an arithmetic number, because the mean of its divisors is an integer number (9944935128).

Almost surely, 2^75123258421 is an apocalyptic number.

It is an amenable number.

75123258421 is a deficient number, since it is larger than the sum of its proper divisors (4436222603).

75123258421 is a wasteful number, since it uses less digits than its factorization.

75123258421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48749771.

The product of its digits is 134400, while the sum is 40.

The spelling of 75123258421 in words is "seventy-five billion, one hundred twenty-three million, two hundred fifty-eight thousand, four hundred twenty-one".