42142532 has 24 divisors (see below), whose sum is σ = 81009600. Its totient is φ = 19093536.

The previous prime is 42142517. The next prime is 42142543. The reversal of 42142532 is 23524124.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 42142498 and 42142507.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10307 + ... + 13802.

It is an arithmetic number, because the mean of its divisors is an integer number (3375400).

Almost surely, 2^42142532 is an apocalyptic number.

It is an amenable number.

42142532 is a deficient number, since it is larger than the sum of its proper divisors (38867068).

42142532 is a wasteful number, since it uses less digits than its factorization.

42142532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24155 (or 24153 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 42142532 is about 6491.7279671902. The cubic root of 42142532 is about 347.9954308644.

Adding to 42142532 its reverse (23524124), we get a palindrome (65666656).

The spelling of 42142532 in words is "forty-two million, one hundred forty-two thousand, five hundred thirty-two".