20234142 has 12 divisors (see below), whose sum is σ = 43840680. Its totient is φ = 6744708.

The previous prime is 20234117. The next prime is 20234143. The reversal of 20234142 is 24143202.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1124119 = 20234142 / (2 + 0 + 2 + 3 + 4 + 1 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20234143) 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, 562042 + ... + 562077.

It is an arithmetic number, because the mean of its divisors is an integer number (3653390).

Almost surely, 2^20234142 is an apocalyptic number.

20234142 is an abundant number, since it is smaller than the sum of its proper divisors (23606538).

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

20234142 is a wasteful number, since it uses less digits than its factorization.

20234142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124127 (or 1124124 counting only the distinct ones).

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

The square root of 20234142 is about 4498.2376549044. The cubic root of 20234142 is about 272.4969199775.

Adding to 20234142 its reverse (24143202), we get a palindrome (44377344).

The spelling of 20234142 in words is "twenty million, two hundred thirty-four thousand, one hundred forty-two".