1253015542 has 8 divisors (see below), whose sum is σ = 1898900136. Its totient is φ = 620048832.

The previous prime is 1253015513. The next prime is 1253015609. The reversal of 1253015542 is 2455103521.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1253015542.

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, 3229228 + ... + 3229615.

It is an arithmetic number, because the mean of its divisors is an integer number (237362517).

Almost surely, 2^1253015542 is an apocalyptic number.

1253015542 is a deficient number, since it is larger than the sum of its proper divisors (645884594).

1253015542 is an equidigital number, since it uses as much as digits as its factorization.

1253015542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6458942.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 1253015542 is about 35397.9595739641. The cubic root of 1253015542 is about 1078.0828878063.

The spelling of 1253015542 in words is "one billion, two hundred fifty-three million, fifteen thousand, five hundred forty-two".