1247505234 has 16 divisors (see below), whose sum is σ = 2603489472. Its totient is φ = 397755248.

The previous prime is 1247505199. The next prime is 1247505239. The reversal of 1247505234 is 4325057421.

It is a zygodrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 1247505195 and 1247505204.

It is not an unprimeable number, because it can be changed into a prime (1247505239) 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, 4519809 + ... + 4520084.

It is an arithmetic number, because the mean of its divisors is an integer number (162718092).

Almost surely, 2^1247505234 is an apocalyptic number.

1247505234 is an abundant number, since it is smaller than the sum of its proper divisors (1355984238).

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

1247505234 is a wasteful number, since it uses less digits than its factorization.

1247505234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9039921.

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 1247505234 is about 35320.0401188900. The cubic root of 1247505234 is about 1076.5002263374.

The spelling of 1247505234 in words is "one billion, two hundred forty-seven million, five hundred five thousand, two hundred thirty-four".