121415142 has 16 divisors (see below), whose sum is σ = 244090800. Its totient is φ = 40261632.

The previous prime is 121415117. The next prime is 121415143. The reversal of 121415142 is 241514121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121415143) 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, 51267 + ... + 53582.

It is an arithmetic number, because the mean of its divisors is an integer number (15255675).

Almost surely, 2^121415142 is an apocalyptic number.

121415142 is an abundant number, since it is smaller than the sum of its proper divisors (122675658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121415142 is a wasteful number, since it uses less digits than its factorization.

121415142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105047.

The product of its digits is 320, while the sum is 21.

The square root of 121415142 is about 11018.8539331457. The cubic root of 121415142 is about 495.1737539190.

Adding to 121415142 its reverse (241514121), we get a palindrome (362929263).

The spelling of 121415142 in words is "one hundred twenty-one million, four hundred fifteen thousand, one hundred forty-two".