1251342130 has 16 divisors (see below), whose sum is σ = 2269612224. Its totient is φ = 496715440.

The previous prime is 1251342107. The next prime is 1251342133. The reversal of 1251342130 is 312431521.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1251342133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476302 + ... + 478921.

It is an arithmetic number, because the mean of its divisors is an integer number (141850764).

Almost surely, 2^1251342130 is an apocalyptic number.

1251342130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1251342130 is a deficient number, since it is larger than the sum of its proper divisors (1018270094).

1251342130 is a wasteful number, since it uses less digits than its factorization.

1251342130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955361.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1251342130 is about 35374.3145516630. The cubic root of 1251342130 is about 1077.6027446379.

Adding to 1251342130 its reverse (312431521), we get a palindrome (1563773651).

The spelling of 1251342130 in words is "one billion, two hundred fifty-one million, three hundred forty-two thousand, one hundred thirty".