123542401003 has 16 divisors (see below), whose sum is σ = 149762304000. Its totient is φ = 99487380096.

The previous prime is 123542400991. The next prime is 123542401009. The reversal of 123542401003 is 300104245321.

It is a cyclic number.

It is not a de Polignac number, because 123542401003 - 2¹³ = 123542392811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123542401009) 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, 855003 + ... + 988996.

It is an arithmetic number, because the mean of its divisors is an integer number (9360144000).

Almost surely, 2^123542401003 is an apocalyptic number.

123542401003 is a deficient number, since it is larger than the sum of its proper divisors (26219902997).

123542401003 is a wasteful number, since it uses less digits than its factorization.

123542401003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844586.

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

Adding to 123542401003 its reverse (300104245321), we get a palindrome (423646646324).

The spelling of 123542401003 in words is "one hundred twenty-three billion, five hundred forty-two million, four hundred one thousand, three".