1251213054 has 128 divisors (see below), whose sum is σ = 3182699520. Its totient is φ = 319140864.

The previous prime is 1251213037. The next prime is 1251213079. The reversal of 1251213054 is 4503121521.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3216292 + ... + 3216680.

It is an arithmetic number, because the mean of its divisors is an integer number (24864840).

Almost surely, 2^1251213054 is an apocalyptic number.

1251213054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1251213054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1591349760).

1251213054 is an abundant number, since it is smaller than the sum of its proper divisors (1931486466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1251213054 is a wasteful number, since it uses less digits than its factorization.

1251213054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1251213054 is about 35372.4900735020. The cubic root of 1251213054 is about 1077.5656917724.

Adding to 1251213054 its reverse (4503121521), we get a palindrome (5754334575).

The spelling of 1251213054 in words is "one billion, two hundred fifty-one million, two hundred thirteen thousand, fifty-four".