121240577 has 8 divisors (see below), whose sum is σ = 127784160. Its totient is φ = 114713280.

The previous prime is 121240571. The next prime is 121240643. The reversal of 121240577 is 775042121.

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 121240577 - 2⁶ = 121240513 is a prime.

It is a super-2 number, since 2×121240577² = 29398555022585858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121240571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13118 + ... + 20360.

It is an arithmetic number, because the mean of its divisors is an integer number (15973020).

Almost surely, 2^121240577 is an apocalyptic number.

It is an amenable number.

121240577 is a deficient number, since it is larger than the sum of its proper divisors (6543583).

121240577 is an equidigital number, since it uses as much as digits as its factorization.

121240577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8143.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 121240577 is about 11010.9298880703. The cubic root of 121240577 is about 494.9363275581.

Adding to 121240577 its reverse (775042121), we get a palindrome (896282698).

The spelling of 121240577 in words is "one hundred twenty-one million, two hundred forty thousand, five hundred seventy-seven".