426515143 has 4 divisors (see below), whose sum is σ = 440273728. Its totient is φ = 412756560.

The previous prime is 426515101. The next prime is 426515153. The reversal of 426515143 is 341515624.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426515143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 13758553 = 426515143 / (4 + 2 + 6 + 5 + 1 + 5 + 1 + 4 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426515153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6879246 + ... + 6879307.

It is an arithmetic number, because the mean of its divisors is an integer number (110068432).

Almost surely, 2^426515143 is an apocalyptic number.

426515143 is a deficient number, since it is larger than the sum of its proper divisors (13758585).

426515143 is a wasteful number, since it uses less digits than its factorization.

426515143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13758584.

The product of its digits is 14400, while the sum is 31.

The square root of 426515143 is about 20652.2430500902. The cubic root of 426515143 is about 752.7396942846.

The spelling of 426515143 in words is "four hundred twenty-six million, five hundred fifteen thousand, one hundred forty-three".