1215442454102 has 8 divisors (see below), whose sum is σ = 1824430651200. Its totient is φ = 607298903704.

The previous prime is 1215442454077. The next prime is 1215442454119. The reversal of 1215442454102 is 2014542445121.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211158077 + ... + 211163832.

It is an arithmetic number, because the mean of its divisors is an integer number (228053831400).

Almost surely, 2^{1215442454102} is an apocalyptic number.

1215442454102 is a deficient number, since it is larger than the sum of its proper divisors (608988197098).

1215442454102 is a wasteful number, since it uses less digits than its factorization.

1215442454102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422323350.

The product of its (nonzero) digits is 51200, while the sum is 35.

Adding to 1215442454102 its reverse (2014542445121), we get a palindrome (3229984899223).

The spelling of 1215442454102 in words is "one trillion, two hundred fifteen billion, four hundred forty-two million, four hundred fifty-four thousand, one hundred two".