612142477 has 4 divisors (see below), whose sum is σ = 648150876. Its totient is φ = 576134080.

The previous prime is 612142403. The next prime is 612142537. The reversal of 612142477 is 774241216.

It is a happy number.

612142477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 181413961 + 430728516 = 13469^2 + 20754^2 .

It is a de Polignac number, because none of the positive numbers 2^k-612142477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612142277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18004174 + ... + 18004207.

It is an arithmetic number, because the mean of its divisors is an integer number (162037719).

Almost surely, 2^612142477 is an apocalyptic number.

It is an amenable number.

612142477 is a deficient number, since it is larger than the sum of its proper divisors (36008399).

612142477 is a wasteful number, since it uses less digits than its factorization.

612142477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36008398.

The product of its digits is 18816, while the sum is 34.

The square root of 612142477 is about 24741.5132318134. The cubic root of 612142477 is about 849.0843551713.

The spelling of 612142477 in words is "six hundred twelve million, one hundred forty-two thousand, four hundred seventy-seven".