712540422 has 64 divisors (see below), whose sum is σ = 1730649600. Its totient is φ = 215511840.

The previous prime is 712540417. The next prime is 712540429. The reversal of 712540422 is 224045217.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712540429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 491703 + ... + 493149.

It is an arithmetic number, because the mean of its divisors is an integer number (27041400).

Almost surely, 2^712540422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 712540422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (865324800).

712540422 is an abundant number, since it is smaller than the sum of its proper divisors (1018109178).

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

712540422 is a wasteful number, since it uses less digits than its factorization.

712540422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2298 (or 2292 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 712540422 is about 26693.4527927730. The cubic root of 712540422 is about 893.1748839358.

Adding to 712540422 its reverse (224045217), we get a palindrome (936585639).

The spelling of 712540422 in words is "seven hundred twelve million, five hundred forty thousand, four hundred twenty-two".