1251145030 has 64 divisors (see below), whose sum is σ = 2411088768. Its totient is φ = 466385920.

The previous prime is 1251145019. The next prime is 1251145043. The reversal of 1251145030 is 305411521.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1251144992 and 1251145010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2401170 + ... + 2401690.

It is an arithmetic number, because the mean of its divisors is an integer number (37673262).

Almost surely, 2^1251145030 is an apocalyptic number.

1251145030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1251145030 is a deficient number, since it is larger than the sum of its proper divisors (1159943738).

1251145030 is a wasteful number, since it uses less digits than its factorization.

1251145030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1251145030 is about 35371.5285222451. The cubic root of 1251145030 is about 1077.5461636149.

Adding to 1251145030 its reverse (305411521), we get a palindrome (1556556551).

The spelling of 1251145030 in words is "one billion, two hundred fifty-one million, one hundred forty-five thousand, thirty".