501438142 has 8 divisors (see below), whose sum is σ = 754873416. Its totient is φ = 249813672.

The previous prime is 501438131. The next prime is 501438151. The reversal of 501438142 is 241834105.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 501438142.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452008 + ... + 453115.

It is an arithmetic number, because the mean of its divisors is an integer number (94359177).

Almost surely, 2^501438142 is an apocalyptic number.

501438142 is a deficient number, since it is larger than the sum of its proper divisors (253435274).

501438142 is a wasteful number, since it uses less digits than its factorization.

501438142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905402.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 501438142 is about 22392.8145171615. The cubic root of 501438142 is about 794.4607669343.

It can be divided in two parts, 50143 and 8142, that added together give a palindrome (58285).

The spelling of 501438142 in words is "five hundred one million, four hundred thirty-eight thousand, one hundred forty-two".