42136045 has 8 divisors (see below), whose sum is σ = 57786624. Its totient is φ = 28893264.

The previous prime is 42136027. The next prime is 42136049. The reversal of 42136045 is 54063124.

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 42136045 - 2⁷ = 42135917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42136049) 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, 601909 + ... + 601978.

It is an arithmetic number, because the mean of its divisors is an integer number (7223328).

Almost surely, 2^42136045 is an apocalyptic number.

It is an amenable number.

42136045 is a deficient number, since it is larger than the sum of its proper divisors (15650579).

42136045 is a wasteful number, since it uses less digits than its factorization.

42136045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203899.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 42136045 is about 6491.2283121147. The cubic root of 42136045 is about 347.9775743024.

Adding to 42136045 its reverse (54063124), we get a palindrome (96199169).

It can be divided in two parts, 42 and 136045, that multiplied together give a triangular number (5713890 = T₃₃₈₀).

The spelling of 42136045 in words is "forty-two million, one hundred thirty-six thousand, forty-five".