426340403 has 2 divisors, whose sum is σ = 426340404. Its totient is φ = 426340402.

The previous prime is 426340391. The next prime is 426340423. The reversal of 426340403 is 304043624.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426340403 is a prime.

It is a super-2 number, since 2×426340403² = 363532278460404818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (426340423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213170201 + 213170202.

It is an arithmetic number, because the mean of its divisors is an integer number (213170202).

Almost surely, 2^426340403 is an apocalyptic number.

426340403 is a deficient number, since it is larger than the sum of its proper divisors (1).

426340403 is an equidigital number, since it uses as much as digits as its factorization.

426340403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 426340403 is about 20648.0120834912. The cubic root of 426340403 is about 752.6368830064.

The spelling of 426340403 in words is "four hundred twenty-six million, three hundred forty thousand, four hundred three".