123771403 has 12 divisors (see below), whose sum is σ = 144235080. Its totient is φ = 105901152.

The previous prime is 123771397. The next prime is 123771451. The reversal of 123771403 is 304177321.

It is a de Polignac number, because none of the positive numbers 2^k-123771403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123771463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30375 + ... + 34207.

It is an arithmetic number, because the mean of its divisors is an integer number (12019590).

Almost surely, 2^123771403 is an apocalyptic number.

123771403 is a deficient number, since it is larger than the sum of its proper divisors (20463677).

123771403 is an equidigital number, since it uses as much as digits as its factorization.

123771403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506 (or 4499 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 123771403 is about 11125.2596823625. The cubic root of 123771403 is about 498.3564742320.

The spelling of 123771403 in words is "one hundred twenty-three million, seven hundred seventy-one thousand, four hundred three".