612520454742 has 32 divisors (see below), whose sum is σ = 1400071018752. Its totient is φ = 175002811104.

The previous prime is 612520454731. The next prime is 612520454743. The reversal of 612520454742 is 247454025216.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 612520454694 and 612520454703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612520454743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3661348 + ... + 3824984.

It is an arithmetic number, because the mean of its divisors is an integer number (43752219336).

Almost surely, 2^612520454742 is an apocalyptic number.

612520454742 is an abundant number, since it is smaller than the sum of its proper divisors (787550564010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

612520454742 is a wasteful number, since it uses less digits than its factorization.

612520454742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252772.

The product of its (nonzero) digits is 537600, while the sum is 42.

Adding to 612520454742 its reverse (247454025216), we get a palindrome (859974479958).

The spelling of 612520454742 in words is "six hundred twelve billion, five hundred twenty million, four hundred fifty-four thousand, seven hundred forty-two".