1305626423420 has 72 divisors (see below), whose sum is σ = 3172348611600. Its totient is φ = 449785163520.

The previous prime is 1305626423417. The next prime is 1305626423459. The reversal of 1305626423420 is 243246265031.

It is a super-2 number, since 2×1305626423420² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 14151785 + ... + 14243744.

Almost surely, 2^{1305626423420} is an apocalyptic number.

1305626423420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1305626423420 is an abundant number, since it is smaller than the sum of its proper divisors (1866722188180).

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

1305626423420 is a wasteful number, since it uses less digits than its factorization.

1305626423420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28395579 (or 28395566 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 1305626423420 in words is "one trillion, three hundred five billion, six hundred twenty-six million, four hundred twenty-three thousand, four hundred twenty".