1245145407 has 8 divisors (see below), whose sum is σ = 1811120640. Its totient is φ = 754633560.

The previous prime is 1245145397. The next prime is 1245145409. The reversal of 1245145407 is 7045415421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1245145407 - 2⁸ = 1245145151 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 37731679 = 1245145407 / (1 + 2 + 4 + 5 + 1 + 4 + 5 + 4 + 0 + 7).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245145409) 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, 18865807 + ... + 18865872.

It is an arithmetic number, because the mean of its divisors is an integer number (226390080).

Almost surely, 2^1245145407 is an apocalyptic number.

1245145407 is a deficient number, since it is larger than the sum of its proper divisors (565975233).

1245145407 is a wasteful number, since it uses less digits than its factorization.

1245145407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37731693.

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 1245145407 is about 35286.6179592207. The cubic root of 1245145407 is about 1075.8210153476.

It can be divided in two parts, 124514 and 5407, that added together give a palindrome (129921).

The spelling of 1245145407 in words is "one billion, two hundred forty-five million, one hundred forty-five thousand, four hundred seven".