42136023 has 8 divisors (see below), whose sum is σ = 58624128. Its totient is φ = 26869304.

The previous prime is 42135991. The next prime is 42136027. The reversal of 42136023 is 32063124.

It is a happy number.

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 42136023 - 2⁵ = 42135991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42136027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305265 + ... + 305402.

It is an arithmetic number, because the mean of its divisors is an integer number (7328016).

Almost surely, 2^42136023 is an apocalyptic number.

42136023 is a deficient number, since it is larger than the sum of its proper divisors (16488105).

42136023 is a wasteful number, since it uses less digits than its factorization.

42136023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610693.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 42136023 is about 6491.2266175200. The cubic root of 42136023 is about 347.9775137406.

Adding to 42136023 its reverse (32063124), we get a palindrome (74199147).

The spelling of 42136023 in words is "forty-two million, one hundred thirty-six thousand, twenty-three".