121262401 has 6 divisors (see below), whose sum is σ = 131307990. Its totient is φ = 111934368.

The previous prime is 121262381. The next prime is 121262413. The reversal of 121262401 is 104262121.

It can be written as a sum of positive squares in 3 ways, for example, as 4946176 + 116316225 = 2224^2 + 10785^2 .

It is not a de Polignac number, because 121262401 - 2¹¹ = 121260353 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 (121262201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 358596 + ... + 358933.

It is an arithmetic number, because the mean of its divisors is an integer number (21884665).

Almost surely, 2^121262401 is an apocalyptic number.

It is an amenable number.

121262401 is a deficient number, since it is larger than the sum of its proper divisors (10045589).

121262401 is an equidigital number, since it uses as much as digits as its factorization.

121262401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717555 (or 717542 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 121262401 is about 11011.9208587785. The cubic root of 121262401 is about 494.9660229034.

The spelling of 121262401 in words is "one hundred twenty-one million, two hundred sixty-two thousand, four hundred one".