64207542 has 40 divisors (see below), whose sum is σ = 149842296. Its totient is φ = 18340896.

The previous prime is 64207529. The next prime is 64207553. The reversal of 64207542 is 24570246.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12178 + ... + 16634.

Almost surely, 2^64207542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64207542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74921148).

64207542 is an abundant number, since it is smaller than the sum of its proper divisors (85634754).

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

64207542 is an equidigital number, since it uses as much as digits as its factorization.

64207542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4490 (or 4469 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 64207542 is about 8012.9608759809. The cubic root of 64207542 is about 400.4319126275.

Adding to 64207542 its reverse (24570246), we get a palindrome (88777788).

The spelling of 64207542 in words is "sixty-four million, two hundred seven thousand, five hundred forty-two".