123402430016 has 28 divisors (see below), whose sum is σ = 248891077020. Its totient is φ = 60689717760.

The previous prime is 123402430013. The next prime is 123402430027. The reversal of 123402430016 is 610034204321.

It can be written as a sum of positive squares in 2 ways, for example, as 10962927616 + 112439502400 = 104704^2 + 335320^2 .

It is not an unprimeable number, because it can be changed into a prime (123402430013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15800711 + ... + 15808518.

Almost surely, 2^123402430016 is an apocalyptic number.

123402430016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123402430016 is an abundant number, since it is smaller than the sum of its proper divisors (125488647004).

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

123402430016 is an equidigital number, since it uses as much as digits as its factorization.

123402430016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31609302 (or 31609292 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 123402430016 its reverse (610034204321), we get a palindrome (733436634337).

The spelling of 123402430016 in words is "one hundred twenty-three billion, four hundred two million, four hundred thirty thousand, sixteen".