121263545 has 16 divisors (see below), whose sum is σ = 157151232. Its totient is φ = 89296320.

The previous prime is 121263539. The next prime is 121263553. The reversal of 121263545 is 545362121.

It is a de Polignac number, because none of the positive numbers 2^k-121263545 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22460 + ... + 27330.

It is an arithmetic number, because the mean of its divisors is an integer number (9821952).

Almost surely, 2^121263545 is an apocalyptic number.

It is an amenable number.

121263545 is a deficient number, since it is larger than the sum of its proper divisors (35887687).

121263545 is a wasteful number, since it uses less digits than its factorization.

121263545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5272.

The product of its digits is 7200, while the sum is 29.

The square root of 121263545 is about 11011.9728023638. The cubic root of 121263545 is about 494.9675794159.

The spelling of 121263545 in words is "one hundred twenty-one million, two hundred sixty-three thousand, five hundred forty-five".