42123601 has 16 divisors (see below), whose sum is σ = 46324096. Its totient is φ = 38071296.

The previous prime is 42123593. The next prime is 42123619. The reversal of 42123601 is 10632124.

It is a cyclic number.

It is not a de Polignac number, because 42123601 - 2³ = 42123593 is a prime.

It is a super-2 number, since 2×42123601² = 3548795522414402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42123691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218161 + ... + 218353.

It is an arithmetic number, because the mean of its divisors is an integer number (2895256).

Almost surely, 2^42123601 is an apocalyptic number.

It is an amenable number.

42123601 is a deficient number, since it is larger than the sum of its proper divisors (4200495).

42123601 is a wasteful number, since it uses less digits than its factorization.

42123601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 42123601 is about 6490.2697170457. The cubic root of 42123601 is about 347.9433149624.

Adding to 42123601 its reverse (10632124), we get a palindrome (52755725).

It can be divided in two parts, 42123 and 601, that added together give a palindrome (42724).

The spelling of 42123601 in words is "forty-two million, one hundred twenty-three thousand, six hundred one".