121445245 has 8 divisors (see below), whose sum is σ = 153404640. Its totient is φ = 92042640.

The previous prime is 121445231. The next prime is 121445251. The reversal of 121445245 is 542544121.

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

It is not a de Polignac number, because 121445245 - 2⁵ = 121445213 is a prime.

It is a super-2 number, since 2×121445245² = 29497895066220050, which contains 22 as substring.

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, 639091 + ... + 639280.

It is an arithmetic number, because the mean of its divisors is an integer number (19175580).

Almost surely, 2^121445245 is an apocalyptic number.

It is an amenable number.

121445245 is a deficient number, since it is larger than the sum of its proper divisors (31959395).

121445245 is a wasteful number, since it uses less digits than its factorization.

121445245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278395.

The product of its digits is 6400, while the sum is 28.

The square root of 121445245 is about 11020.2198253937. The cubic root of 121445245 is about 495.2146740862.

Adding to 121445245 its reverse (542544121), we get a palindrome (663989366).

The spelling of 121445245 in words is "one hundred twenty-one million, four hundred forty-five thousand, two hundred forty-five".