245123004 has 24 divisors (see below), whose sum is σ = 653661568. Its totient is φ = 70035120.

The previous prime is 245122991. The next prime is 245123033. The reversal of 245123004 is 400321542.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1458982 + ... + 1459149.

Almost surely, 2^245123004 is an apocalyptic number.

It is an amenable number.

245123004 is an abundant number, since it is smaller than the sum of its proper divisors (408538564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245123004 is a wasteful number, since it uses less digits than its factorization.

245123004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2918145 (or 2918143 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 245123004 is about 15656.4045680993. The cubic root of 245123004 is about 625.8371748672.

Adding to 245123004 its reverse (400321542), we get a palindrome (645444546).

The spelling of 245123004 in words is "two hundred forty-five million, one hundred twenty-three thousand, four".