1612512442 has 4 divisors (see below), whose sum is σ = 2418768666. Its totient is φ = 806256220.

The previous prime is 1612512409. The next prime is 1612512457. The reversal of 1612512442 is 2442152161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2442152161 = 523 ⋅4669507.

It can be written as a sum of positive squares in only one way, i.e., 1423477441 + 189035001 = 37729^2 + 13749^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1612512442.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403128109 + ... + 403128112.

Almost surely, 2^1612512442 is an apocalyptic number.

1612512442 is a deficient number, since it is larger than the sum of its proper divisors (806256224).

1612512442 is an equidigital number, since it uses as much as digits as its factorization.

1612512442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806256223.

The product of its digits is 3840, while the sum is 28.

The square root of 1612512442 is about 40156.1009312408. The cubic root of 1612512442 is about 1172.6480654616.

The spelling of 1612512442 in words is "one billion, six hundred twelve million, five hundred twelve thousand, four hundred forty-two".