245123212 has 6 divisors (see below), whose sum is σ = 428965628. Its totient is φ = 122561604.

The previous prime is 245123209. The next prime is 245123239. The reversal of 245123212 is 212321542.

It is a happy number.

It is a super-2 number, since 2×245123212² = 120170778122393888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30640398 + ... + 30640405.

Almost surely, 2^245123212 is an apocalyptic number.

It is an amenable number.

245123212 is a deficient number, since it is larger than the sum of its proper divisors (183842416).

245123212 is a wasteful number, since it uses less digits than its factorization.

245123212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61280807 (or 61280805 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 245123212 is about 15656.4112107469. The cubic root of 245123212 is about 625.8373518859.

Adding to 245123212 its reverse (212321542), we get a palindrome (457444754).

The spelling of 245123212 in words is "two hundred forty-five million, one hundred twenty-three thousand, two hundred twelve".