42302123 has 4 divisors (see below), whose sum is σ = 42317640. Its totient is φ = 42286608.

The previous prime is 42302101. The next prime is 42302147. The reversal of 42302123 is 32120324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42302123 - 2¹⁴ = 42285739 is a prime.

It is a super-2 number, since 2×42302123² = 3578939220614258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42302173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2465 + ... + 9522.

It is an arithmetic number, because the mean of its divisors is an integer number (10579410).

Almost surely, 2^42302123 is an apocalyptic number.

42302123 is a deficient number, since it is larger than the sum of its proper divisors (15517).

42302123 is a wasteful number, since it uses less digits than its factorization.

42302123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15516.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 42302123 is about 6504.0082257021. The cubic root of 42302123 is about 348.4341561330.

Adding to 42302123 its reverse (32120324), we get a palindrome (74422447).

The spelling of 42302123 in words is "forty-two million, three hundred two thousand, one hundred twenty-three".