121627421 has 8 divisors (see below), whose sum is σ = 128197080. Its totient is φ = 115216192.

The previous prime is 121627409. The next prime is 121627459. The reversal of 121627421 is 124726121.

It can be written as a sum of positive squares in 4 ways, for example, as 57547396 + 64080025 = 7586^2 + 8005^2 .

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 121627421 - 2¹⁰ = 121626397 is a prime.

It is a super-2 number, since 2×121627421² = 29586459078222482, which 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 (121621421) 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, 38030 + ... + 41103.

It is an arithmetic number, because the mean of its divisors is an integer number (16024635).

Almost surely, 2^121627421 is an apocalyptic number.

It is an amenable number.

121627421 is a deficient number, since it is larger than the sum of its proper divisors (6569659).

121627421 is an equidigital number, since it uses as much as digits as its factorization.

121627421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79215.

The product of its digits is 1344, while the sum is 26.

The square root of 121627421 is about 11028.4822618527. The cubic root of 121627421 is about 495.4621687655.

The spelling of 121627421 in words is "one hundred twenty-one million, six hundred twenty-seven thousand, four hundred twenty-one".