531000142 has 8 divisors (see below), whose sum is σ = 796806432. Its totient is φ = 265398000.

The previous prime is 531000139. The next prime is 531000157. The reversal of 531000142 is 241000135.

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

It is a super-3 number, since 3×531000142³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44359 + ... + 55042.

It is an arithmetic number, because the mean of its divisors is an integer number (99600804).

Almost surely, 2^531000142 is an apocalyptic number.

531000142 is a deficient number, since it is larger than the sum of its proper divisors (265806290).

531000142 is a wasteful number, since it uses less digits than its factorization.

531000142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102074.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 531000142 is about 23043.4403247432. The cubic root of 531000142 is about 809.7759589691.

Adding to 531000142 its reverse (241000135), we get a palindrome (772000277).

The spelling of 531000142 in words is "five hundred thirty-one million, one hundred forty-two", and thus it is an aban number.