124754909457421 has 4 divisors (see below), whose sum is σ = 124755103954332. Its totient is φ = 124754714960512.

The previous prime is 124754909457419. The next prime is 124754909457469.

124754909457421 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17080978131396 + 107673931326025 = 4132914^2 + 10376605^2 .

It is a cyclic number.

It is not a de Polignac number, because 124754909457421 - 2¹ = 124754909457419 is a prime.

It is a super-2 number, since 2×124754909457421² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124754901457421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96283126 + ... + 97570231.

It is an arithmetic number, because the mean of its divisors is an integer number (31188775988583).

Almost surely, 2^{124754909457421} is an apocalyptic number.

It is an amenable number.

124754909457421 is a deficient number, since it is larger than the sum of its proper divisors (194496911).

124754909457421 is an equidigital number, since it uses as much as digits as its factorization.

124754909457421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194496910.

The product of its (nonzero) digits is 101606400, while the sum is 64.

The spelling of 124754909457421 in words is "one hundred twenty-four trillion, seven hundred fifty-four billion, nine hundred nine million, four hundred fifty-seven thousand, four hundred twenty-one".