1215250142 has 8 divisors (see below), whose sum is σ = 1861659936. Its totient is φ = 594696832.

The previous prime is 1215250123. The next prime is 1215250159. The reversal of 1215250142 is 2410525121.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6464003 + ... + 6464190.

It is an arithmetic number, because the mean of its divisors is an integer number (232707492).

Almost surely, 2^1215250142 is an apocalyptic number.

1215250142 is a deficient number, since it is larger than the sum of its proper divisors (646409794).

1215250142 is a wasteful number, since it uses less digits than its factorization.

1215250142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12928242.

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

The square root of 1215250142 is about 34860.4380637995. The cubic root of 1215250142 is about 1067.1412149975.

Adding to 1215250142 its reverse (2410525121), we get a palindrome (3625775263).

The spelling of 1215250142 in words is "one billion, two hundred fifteen million, two hundred fifty thousand, one hundred forty-two".