121307146 has 4 divisors (see below), whose sum is σ = 181960722. Its totient is φ = 60653572.

The previous prime is 121307143. The next prime is 121307159. The reversal of 121307146 is 641703121.

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

It can be written as a sum of positive squares in only one way, i.e., 121242121 + 65025 = 11011^2 + 255^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121307146.

It is not an unprimeable number, because it can be changed into a prime (121307143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30326785 + ... + 30326788.

Almost surely, 2^121307146 is an apocalyptic number.

121307146 is a deficient number, since it is larger than the sum of its proper divisors (60653576).

121307146 is an equidigital number, since it uses as much as digits as its factorization.

121307146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60653575.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 121307146 is about 11013.9523332907. The cubic root of 121307146 is about 495.0268951138.

The spelling of 121307146 in words is "one hundred twenty-one million, three hundred seven thousand, one hundred forty-six".