123421390694 has 32 divisors (see below), whose sum is σ = 217616668416. Its totient is φ = 51389791200.

The previous prime is 123421390691. The next prime is 123421390723. The reversal of 123421390694 is 496093124321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123421390691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179369 + ... + 528219.

It is an arithmetic number, because the mean of its divisors is an integer number (6800520888).

Almost surely, 2^123421390694 is an apocalyptic number.

123421390694 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

123421390694 is a deficient number, since it is larger than the sum of its proper divisors (94195277722).

123421390694 is a wasteful number, since it uses less digits than its factorization.

123421390694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349580.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 123421390694 in words is "one hundred twenty-three billion, four hundred twenty-one million, three hundred ninety thousand, six hundred ninety-four".