1572865442 has 8 divisors (see below), whose sum is σ = 2461876416. Its totient is φ = 752239972.

The previous prime is 1572865423. The next prime is 1572865457. The reversal of 1572865442 is 2445682751.

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 = 1572865393 and 1572865402.

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, 17096318 + ... + 17096409.

It is an arithmetic number, because the mean of its divisors is an integer number (307734552).

Almost surely, 2^1572865442 is an apocalyptic number.

1572865442 is a deficient number, since it is larger than the sum of its proper divisors (889010974).

1572865442 is a wasteful number, since it uses less digits than its factorization.

1572865442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34192752.

The product of its digits is 537600, while the sum is 44.

The square root of 1572865442 is about 39659.3676449840. The cubic root of 1572865442 is about 1162.9575348118.

The spelling of 1572865442 in words is "one billion, five hundred seventy-two million, eight hundred sixty-five thousand, four hundred forty-two".