612789542 has 4 divisors (see below), whose sum is σ = 919184316. Its totient is φ = 306394770.

The previous prime is 612789511. The next prime is 612789553. The reversal of 612789542 is 245987216.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×612789542² = 751022045569139528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 612789493 and 612789502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153197384 + ... + 153197387.

It is an arithmetic number, because the mean of its divisors is an integer number (229796079).

Almost surely, 2^612789542 is an apocalyptic number.

612789542 is a deficient number, since it is larger than the sum of its proper divisors (306394774).

612789542 is a wasteful number, since it uses less digits than its factorization.

612789542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306394773.

The product of its digits is 241920, while the sum is 44.

The square root of 612789542 is about 24754.5862821417. The cubic root of 612789542 is about 849.3834245966.

The spelling of 612789542 in words is "six hundred twelve million, seven hundred eighty-nine thousand, five hundred forty-two".