1217254030 has 16 divisors (see below), whose sum is σ = 2191560624. Its totient is φ = 486789760.

The previous prime is 1217253977. The next prime is 1217254037. The reversal of 1217254030 is 304527121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1217253986 and 1217254004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217254037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42645 + ... + 65215.

It is an arithmetic number, because the mean of its divisors is an integer number (136972539).

Almost surely, 2^1217254030 is an apocalyptic number.

1217254030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1217254030 is a deficient number, since it is larger than the sum of its proper divisors (974306594).

1217254030 is a wasteful number, since it uses less digits than its factorization.

1217254030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27971.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 1217254030 is about 34889.1678032022. The cubic root of 1217254030 is about 1067.7274474356.

The spelling of 1217254030 in words is "one billion, two hundred seventeen million, two hundred fifty-four thousand, thirty".