42142031 has 8 divisors (see below), whose sum is σ = 44848800. Its totient is φ = 39460608.

The previous prime is 42142027. The next prime is 42142069. The reversal of 42142031 is 13024124.

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

It is a cyclic number.

It is not a de Polignac number, because 42142031 - 2² = 42142027 is a prime.

It is a super-2 number, since 2×42142031² = 3551901553609922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42142081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2846 + ... + 9611.

It is an arithmetic number, because the mean of its divisors is an integer number (5606100).

Almost surely, 2^42142031 is an apocalyptic number.

42142031 is a deficient number, since it is larger than the sum of its proper divisors (2706769).

42142031 is a wasteful number, since it uses less digits than its factorization.

42142031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12673.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 42142031 is about 6491.6893795067. The cubic root of 42142031 is about 347.9940518427.

Adding to 42142031 its reverse (13024124), we get a palindrome (55166155).

The spelling of 42142031 in words is "forty-two million, one hundred forty-two thousand, thirty-one".