121252645 has 8 divisors (see below), whose sum is σ = 145678104. Its totient is φ = 96885504.

The previous prime is 121252633. The next prime is 121252667. The reversal of 121252645 is 546252121.

121252645 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in 4 ways, for example, as 13549761 + 107702884 = 3681^2 + 10378^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121252645 - 2¹⁷ = 121121573 is a prime.

It is a super-3 number, since 3×121252645³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9864 + ... + 18433.

It is an arithmetic number, because the mean of its divisors is an integer number (18209763).

Almost surely, 2^121252645 is an apocalyptic number.

It is an amenable number.

121252645 is a deficient number, since it is larger than the sum of its proper divisors (24425459).

121252645 is an equidigital number, since it uses as much as digits as its factorization.

121252645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29159.

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

The square root of 121252645 is about 11011.4778753808. The cubic root of 121252645 is about 494.9527486101.

The spelling of 121252645 in words is "one hundred twenty-one million, two hundred fifty-two thousand, six hundred forty-five".