123743772 has 72 divisors (see below), whose sum is σ = 328473600. Its totient is φ = 39204000.

The previous prime is 123743761. The next prime is 123743801. The reversal of 123743772 is 277347321.

It is a happy number.

It is a super-2 number, since 2×123743772² = 30625042217575968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 164397 + ... + 165147.

Almost surely, 2^123743772 is an apocalyptic number.

123743772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123743772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164236800).

123743772 is an abundant number, since it is smaller than the sum of its proper divisors (204729828).

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

123743772 is a wasteful number, since it uses less digits than its factorization.

123743772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983 (or 978 counting only the distinct ones).

The product of its digits is 49392, while the sum is 36.

The square root of 123743772 is about 11124.0177993385. The cubic root of 123743772 is about 498.3193867406.

The spelling of 123743772 in words is "one hundred twenty-three million, seven hundred forty-three thousand, seven hundred seventy-two".