121961461 has 4 divisors (see below), whose sum is σ = 122472000. Its totient is φ = 121450924.

The previous prime is 121961453. The next prime is 121961467. The reversal of 121961461 is 164169121.

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: 164169121 = 5179 ⋅31699.

It is a cyclic number.

It is not a de Polignac number, because 121961461 - 2³ = 121961453 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 (121961467) 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, 254911 + ... + 255388.

It is an arithmetic number, because the mean of its divisors is an integer number (30618000).

Almost surely, 2^121961461 is an apocalyptic number.

It is an amenable number.

121961461 is a deficient number, since it is larger than the sum of its proper divisors (510539).

121961461 is an equidigital number, since it uses as much as digits as its factorization.

121961461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510538.

The product of its digits is 2592, while the sum is 31.

The square root of 121961461 is about 11043.6163008319. The cubic root of 121961461 is about 495.9153365835.

The spelling of 121961461 in words is "one hundred twenty-one million, nine hundred sixty-one thousand, four hundred sixty-one".