123540054 has 64 divisors (see below), whose sum is σ = 288437760. Its totient is φ = 34859520.

The previous prime is 123540049. The next prime is 123540083. The reversal of 123540054 is 450045321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115032 + ... + 116100.

It is an arithmetic number, because the mean of its divisors is an integer number (4506840).

Almost surely, 2^123540054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123540054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144218880).

123540054 is an abundant number, since it is smaller than the sum of its proper divisors (164897706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123540054 is a wasteful number, since it uses less digits than its factorization.

123540054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 123540054 is about 11114.8573540104. The cubic root of 123540054 is about 498.0457773116.

Adding to 123540054 its reverse (450045321), we get a palindrome (573585375).

The spelling of 123540054 in words is "one hundred twenty-three million, five hundred forty thousand, fifty-four".