121969455 has 32 divisors (see below), whose sum is σ = 206288640. Its totient is φ = 61367040.

The previous prime is 121969453. The next prime is 121969481. The reversal of 121969455 is 554969121.

It is not a de Polignac number, because 121969455 - 2¹ = 121969453 is a prime.

It is a super-3 number, since 3×121969455³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121969453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79324 + ... + 80846.

It is an arithmetic number, because the mean of its divisors is an integer number (6446520).

Almost surely, 2^121969455 is an apocalyptic number.

121969455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121969455 is a deficient number, since it is larger than the sum of its proper divisors (84319185).

121969455 is a wasteful number, since it uses less digits than its factorization.

121969455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831.

The product of its digits is 97200, while the sum is 42.

The square root of 121969455 is about 11043.9782234483. The cubic root of 121969455 is about 495.9261713192.

The spelling of 121969455 in words is "one hundred twenty-one million, nine hundred sixty-nine thousand, four hundred fifty-five".