42401240123 has 8 divisors (see below), whose sum is σ = 48690419520. Its totient is φ = 36517814280.

The previous prime is 42401240107. The next prime is 42401240129. The reversal of 42401240123 is 32104210424.

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 42401240123 - 2⁴ = 42401240107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42401240129) 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, 101438165 + ... + 101438582.

It is an arithmetic number, because the mean of its divisors is an integer number (6086302440).

Almost surely, 2^42401240123 is an apocalyptic number.

42401240123 is a deficient number, since it is larger than the sum of its proper divisors (6289179397).

42401240123 is a wasteful number, since it uses less digits than its factorization.

42401240123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202876777.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 42401240123 its reverse (32104210424), we get a palindrome (74505450547).

The spelling of 42401240123 in words is "forty-two billion, four hundred one million, two hundred forty thousand, one hundred twenty-three".