121251542 has 4 divisors (see below), whose sum is σ = 181877316. Its totient is φ = 60625770.

The previous prime is 121251541. The next prime is 121251583. The reversal of 121251542 is 245152121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121251541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30312884 + ... + 30312887.

It is an arithmetic number, because the mean of its divisors is an integer number (45469329).

Almost surely, 2^121251542 is an apocalyptic number.

121251542 is a deficient number, since it is larger than the sum of its proper divisors (60625774).

121251542 is an equidigital number, since it uses as much as digits as its factorization.

121251542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60625773.

The product of its digits is 800, while the sum is 23.

The square root of 121251542 is about 11011.4277911631. The cubic root of 121251542 is about 494.9512477919.

The spelling of 121251542 in words is "one hundred twenty-one million, two hundred fifty-one thousand, five hundred forty-two".