121147455 has 32 divisors (see below), whose sum is σ = 227727360. Its totient is φ = 54218880.

The previous prime is 121147441. The next prime is 121147493. The reversal of 121147455 is 554741121.

It is not a de Polignac number, because 121147455 - 2⁶ = 121147391 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26095 + ... + 30384.

It is an arithmetic number, because the mean of its divisors is an integer number (7116480).

Almost surely, 2^121147455 is an apocalyptic number.

121147455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121147455 is a deficient number, since it is larger than the sum of its proper divisors (106579905).

121147455 is a wasteful number, since it uses less digits than its factorization.

121147455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56511.

The product of its digits is 5600, while the sum is 30.

The square root of 121147455 is about 11006.7004592657. The cubic root of 121147455 is about 494.8095788327.

Adding to 121147455 its reverse (554741121), we get a palindrome (675888576).

The spelling of 121147455 in words is "one hundred twenty-one million, one hundred forty-seven thousand, four hundred fifty-five".