121605454 has 16 divisors (see below), whose sum is σ = 193377456. Its totient is φ = 57155200.

The previous prime is 121605443. The next prime is 121605457. The reversal of 121605454 is 454506121.

It is a super-2 number, since 2×121605454² = 29575772885092232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121605457) 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 7 ways as a sum of consecutive naturals, for example, 34389 + ... + 37759.

It is an arithmetic number, because the mean of its divisors is an integer number (12086091).

Almost surely, 2^121605454 is an apocalyptic number.

121605454 is a deficient number, since it is larger than the sum of its proper divisors (71772002).

121605454 is a wasteful number, since it uses less digits than its factorization.

121605454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4451.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 121605454 is about 11027.4862956161. The cubic root of 121605454 is about 495.4323386700.

The spelling of 121605454 in words is "one hundred twenty-one million, six hundred five thousand, four hundred fifty-four".