1245330137 has 8 divisors (see below), whose sum is σ = 1261375752. Its totient is φ = 1229385600.

The previous prime is 1245330133. The next prime is 1245330143. The reversal of 1245330137 is 7310335421.

It can be written as a sum of positive squares in 4 ways, for example, as 13039321 + 1232290816 = 3611^2 + 35104^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1245330137 - 2² = 1245330133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1245330133) 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, 314 + ... + 49907.

It is an arithmetic number, because the mean of its divisors is an integer number (157671969).

Almost surely, 2^1245330137 is an apocalyptic number.

It is an amenable number.

1245330137 is a deficient number, since it is larger than the sum of its proper divisors (16045615).

1245330137 is a wasteful number, since it uses less digits than its factorization.

1245330137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50539.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 1245330137 is about 35289.2354266850. The cubic root of 1245330137 is about 1075.8742157175.

Adding to 1245330137 its reverse (7310335421), we get a palindrome (8555665558).

The spelling of 1245330137 in words is "one billion, two hundred forty-five million, three hundred thirty thousand, one hundred thirty-seven".