501243642 has 12 divisors (see below), whose sum is σ = 1086027930. Its totient is φ = 167081208.

The previous prime is 501243641. The next prime is 501243643. The reversal of 501243642 is 246342105.

501243642 is a `hidden beast` number, since 5 + 0 + 12 + 4 + 3 + 642 = 666.

It is an interprime number because it is at equal distance from previous prime (501243641) and next prime (501243643).

It can be written as a sum of positive squares in only one way, i.e., 478690641 + 22553001 = 21879^2 + 4749^2 .

It is not an unprimeable number, because it can be changed into a prime (501243641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13923417 + ... + 13923452.

Almost surely, 2^501243642 is an apocalyptic number.

501243642 is an abundant number, since it is smaller than the sum of its proper divisors (584784288).

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

501243642 is a wasteful number, since it uses less digits than its factorization.

501243642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27846877 (or 27846874 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 501243642 is about 22388.4711849648. The cubic root of 501243642 is about 794.3580340217.

Adding to 501243642 its reverse (246342105), we get a palindrome (747585747).

The spelling of 501243642 in words is "five hundred one million, two hundred forty-three thousand, six hundred forty-two".