1245264215 has 32 divisors (see below), whose sum is σ = 1627516800. Its totient is φ = 909227520.

The previous prime is 1245264179. The next prime is 1245264217. The reversal of 1245264215 is 5124625421.

It is not a de Polignac number, because 1245264215 - 2⁶ = 1245264151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245264217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4003910 + ... + 4004220.

It is an arithmetic number, because the mean of its divisors is an integer number (50859900).

Almost surely, 2^1245264215 is an apocalyptic number.

1245264215 is a deficient number, since it is larger than the sum of its proper divisors (382252585).

1245264215 is a wasteful number, since it uses less digits than its factorization.

1245264215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827.

The product of its digits is 19200, while the sum is 32.

The square root of 1245264215 is about 35288.3013901208. The cubic root of 1245264215 is about 1075.8552314526.

Adding to 1245264215 its reverse (5124625421), we get a palindrome (6369889636).

It can be divided in two parts, 12452 and 64215, that added together give a palindrome (76667).

The spelling of 1245264215 in words is "one billion, two hundred forty-five million, two hundred sixty-four thousand, two hundred fifteen".