671458542 has 32 divisors (see below), whose sum is σ = 1366826400. Its totient is φ = 219867648.

The previous prime is 671458531. The next prime is 671458549. The reversal of 671458542 is 245854176.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 671458494 and 671458503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671458549) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 79834 + ... + 87842.

It is an arithmetic number, because the mean of its divisors is an integer number (42713325).

Almost surely, 2^671458542 is an apocalyptic number.

671458542 is an abundant number, since it is smaller than the sum of its proper divisors (695367858).

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

671458542 is a wasteful number, since it uses less digits than its factorization.

671458542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8260.

The product of its digits is 268800, while the sum is 42.

The square root of 671458542 is about 25912.5170911666. The cubic root of 671458542 is about 875.6685142027.

It can be divided in two parts, 6714 and 58542, that added together give a palindrome (65256).

The spelling of 671458542 in words is "six hundred seventy-one million, four hundred fifty-eight thousand, five hundred forty-two".