123540053 has 16 divisors (see below), whose sum is σ = 156957696. Its totient is φ = 94590720.

The previous prime is 123540049. The next prime is 123540083. The reversal of 123540053 is 350045321.

It is not a de Polignac number, because 123540053 - 2² = 123540049 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123540013) 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, 19076 + ... + 24717.

It is an arithmetic number, because the mean of its divisors is an integer number (9809856).

Almost surely, 2^123540053 is an apocalyptic number.

123540053 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123540053 is a deficient number, since it is larger than the sum of its proper divisors (33417643).

123540053 is a wasteful number, since it uses less digits than its factorization.

123540053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43844.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 123540053 is about 11114.8573090256. The cubic root of 123540053 is about 498.0457759678.

Adding to 123540053 its reverse (350045321), we get a palindrome (473585374).

The spelling of 123540053 in words is "one hundred twenty-three million, five hundred forty thousand, fifty-three".