423278245 has 12 divisors (see below), whose sum is σ = 550012356. Its totient is φ = 312574080.

The previous prime is 423278239. The next prime is 423278267. The reversal of 423278245 is 542872324.

It can be written as a sum of positive squares in 6 ways, for example, as 71115489 + 352162756 = 8433^2 + 18766^2 .

It is not a de Polignac number, because 423278245 - 2⁹ = 423277733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 249616 + ... + 251305.

It is an arithmetic number, because the mean of its divisors is an integer number (45834363).

Almost surely, 2^423278245 is an apocalyptic number.

It is an amenable number.

423278245 is a deficient number, since it is larger than the sum of its proper divisors (126734111).

423278245 is a wasteful number, since it uses less digits than its factorization.

423278245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500952 (or 500939 counting only the distinct ones).

The product of its digits is 107520, while the sum is 37.

The square root of 423278245 is about 20573.7270566128. The cubic root of 423278245 is about 750.8306323196.

The spelling of 423278245 in words is "four hundred twenty-three million, two hundred seventy-eight thousand, two hundred forty-five".