1215276442 has 8 divisors (see below), whose sum is σ = 1918857600. Its totient is φ = 575657244.

The previous prime is 1215276427. The next prime is 1215276443. The reversal of 1215276442 is 2446725121.

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

It is a junction number, because it is equal to n+sod(n) for n = 1215276398 and 1215276407.

It is not an unprimeable number, because it can be changed into a prime (1215276443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15990442 + ... + 15990517.

It is an arithmetic number, because the mean of its divisors is an integer number (239857200).

Almost surely, 2^1215276442 is an apocalyptic number.

1215276442 is a deficient number, since it is larger than the sum of its proper divisors (703581158).

1215276442 is a wasteful number, since it uses less digits than its factorization.

1215276442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31980980.

The product of its digits is 26880, while the sum is 34.

The square root of 1215276442 is about 34860.8152801968. The cubic root of 1215276442 is about 1067.1489131689.

The spelling of 1215276442 in words is "one billion, two hundred fifteen million, two hundred seventy-six thousand, four hundred forty-two".