1245426245421 has 16 divisors (see below), whose sum is σ = 1769026506240. Its totient is φ = 777108066480.

The previous prime is 1245426245407. The next prime is 1245426245467.

1245426245421 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1245426245421 - 2⁷ = 1245426245293 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245426245491) 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, 131619265 + ... + 131628726.

It is an arithmetic number, because the mean of its divisors is an integer number (110564156640).

Almost surely, 2^{1245426245421} is an apocalyptic number.

It is an amenable number.

1245426245421 is a deficient number, since it is larger than the sum of its proper divisors (523600260819).

1245426245421 is a wasteful number, since it uses less digits than its factorization.

1245426245421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263248096.

The product of its digits is 614400, while the sum is 42.

The spelling of 1245426245421 in words is "one trillion, two hundred forty-five billion, four hundred twenty-six million, two hundred forty-five thousand, four hundred twenty-one".