123402444 has 96 divisors (see below), whose sum is σ = 330946560. Its totient is φ = 35443200.

The previous prime is 123402431. The next prime is 123402467. The reversal of 123402444 is 444204321.

123402444 = T₃₃₇ + T₃₃₈ + ... + T₉₁₉.

It is a happy 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, 216592 + ... + 217160.

It is an arithmetic number, because the mean of its divisors is an integer number (3447360).

Almost surely, 2^123402444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123402444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165473280).

123402444 is an abundant number, since it is smaller than the sum of its proper divisors (207544116).

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

123402444 is a wasteful number, since it uses less digits than its factorization.

123402444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 123402444 is about 11108.6652663585. The cubic root of 123402444 is about 497.8607859122.

Adding to 123402444 its reverse (444204321), we get a palindrome (567606765).

The spelling of 123402444 in words is "one hundred twenty-three million, four hundred two thousand, four hundred forty-four".