426257145 has 24 divisors (see below), whose sum is σ = 743750592. Its totient is φ = 225828000.

The previous prime is 426257129. The next prime is 426257159. The reversal of 426257145 is 541752624.

It is a happy number.

426257145 is a `hidden beast` number, since 42 + 6 + 2 + 571 + 45 = 666.

It is not a de Polignac number, because 426257145 - 2⁴ = 426257129 is a prime.

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, 24571 + ... + 38160.

It is an arithmetic number, because the mean of its divisors is an integer number (30989608).

Almost surely, 2^426257145 is an apocalyptic number.

426257145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

426257145 is a deficient number, since it is larger than the sum of its proper divisors (317493447).

426257145 is a wasteful number, since it uses less digits than its factorization.

426257145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62893 (or 62890 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 426257145 is about 20645.9958587616. The cubic root of 426257145 is about 752.5878868517.

It can be divided in two parts, 42625 and 7145, that added together give a triangular number (49770 = T₃₁₅).

The spelling of 426257145 in words is "four hundred twenty-six million, two hundred fifty-seven thousand, one hundred forty-five".