123370909749 has 12 divisors (see below), whose sum is σ = 180349443456. Its totient is φ = 81256341672.

The previous prime is 123370909741. The next prime is 123370909759. The reversal of 123370909749 is 947909073321.

It is not a de Polignac number, because 123370909749 - 2³ = 123370909741 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 123370909695 and 123370909704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123370909741) 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, 82576837 + ... + 82578330.

It is an arithmetic number, because the mean of its divisors is an integer number (15029120288).

Almost surely, 2^123370909749 is an apocalyptic number.

It is an amenable number.

123370909749 is a deficient number, since it is larger than the sum of its proper divisors (56978533707).

123370909749 is a wasteful number, since it uses less digits than its factorization.

123370909749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165155256 (or 165155253 counting only the distinct ones).

The product of its (nonzero) digits is 2571912, while the sum is 54.

The spelling of 123370909749 in words is "one hundred twenty-three billion, three hundred seventy million, nine hundred nine thousand, seven hundred forty-nine".