42023142 has 24 divisors (see below), whose sum is σ = 104057616. Its totient is φ = 12006576.

The previous prime is 42023129. The next prime is 42023147. The reversal of 42023142 is 24132024.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42023147) 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 11 ways as a sum of consecutive naturals, for example, 166633 + ... + 166884.

It is an arithmetic number, because the mean of its divisors is an integer number (4335734).

Almost surely, 2^42023142 is an apocalyptic number.

42023142 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

42023142 is an abundant number, since it is smaller than the sum of its proper divisors (62034474).

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

42023142 is a wasteful number, since it uses less digits than its factorization.

42023142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333532 (or 333529 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 42023142 is about 6482.5258965931. The cubic root of 42023142 is about 347.6664957891. Note that the first 3 decimals are identical.

Adding to 42023142 its reverse (24132024), we get a palindrome (66155166).

The spelling of 42023142 in words is "forty-two million, twenty-three thousand, one hundred forty-two".