121379045 has 4 divisors (see below), whose sum is σ = 145654860. Its totient is φ = 97103232.

The previous prime is 121379039. The next prime is 121379053. The reversal of 121379045 is 540973121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540973121 = 13 ⋅41613317.

It can be written as a sum of positive squares in 2 ways, for example, as 38514436 + 82864609 = 6206^2 + 9103^2 .

It is a cyclic number.

It is not a de Polignac number, because 121379045 - 2⁴ = 121379029 is a prime.

It is a super-2 number, since 2×121379045² = 29465745130224050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12137900 + ... + 12137909.

It is an arithmetic number, because the mean of its divisors is an integer number (36413715).

Almost surely, 2^121379045 is an apocalyptic number.

It is an amenable number.

121379045 is a deficient number, since it is larger than the sum of its proper divisors (24275815).

121379045 is an equidigital number, since it uses as much as digits as its factorization.

121379045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24275814.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 121379045 is about 11017.2158461201. The cubic root of 121379045 is about 495.1246769577.

The spelling of 121379045 in words is "one hundred twenty-one million, three hundred seventy-nine thousand, forty-five".