1013400123 has 8 divisors (see below), whose sum is σ = 1351619136. Its totient is φ = 675390600.

The previous prime is 1013400083. The next prime is 1013400127. The reversal of 1013400123 is 3210043101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1013400123 - 2¹³ = 1013391931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1013400127) 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, 40713 + ... + 60698.

It is an arithmetic number, because the mean of its divisors is an integer number (168952392).

Almost surely, 2^1013400123 is an apocalyptic number.

1013400123 is a deficient number, since it is larger than the sum of its proper divisors (338219013).

1013400123 is a wasteful number, since it uses less digits than its factorization.

1013400123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104745.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1013400123 is about 31833.9460796176. The cubic root of 1013400123 is about 1004.4469034043.

Adding to 1013400123 its reverse (3210043101), we get a palindrome (4223443224).

The spelling of 1013400123 in words is "one billion, thirteen million, four hundred thousand, one hundred twenty-three".