121407451 has 4 divisors (see below), whose sum is σ = 132444504. Its totient is φ = 110370400.

The previous prime is 121407401. The next prime is 121407463. The reversal of 121407451 is 154704121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121407451 - 2⁹ = 121406939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121407401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5518510 + ... + 5518531.

It is an arithmetic number, because the mean of its divisors is an integer number (33111126).

Almost surely, 2^121407451 is an apocalyptic number.

121407451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121407451 is a deficient number, since it is larger than the sum of its proper divisors (11037053).

121407451 is a wasteful number, since it uses less digits than its factorization.

121407451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11037052.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 121407451 is about 11018.5049348811. The cubic root of 121407451 is about 495.1632981617.

It can be divided in two parts, 12140 and 7451, that added together give a palindrome (19591).

The spelling of 121407451 in words is "one hundred twenty-one million, four hundred seven thousand, four hundred fifty-one".