1252143155 has 8 divisors (see below), whose sum is σ = 1502796192. Its totient is φ = 1001564928.

The previous prime is 1252143133. The next prime is 1252143163. The reversal of 1252143155 is 5513412521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1252143155 is a prime.

It is a super-2 number, since 2×1252143155² = 3135724961226708050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29354 + ... + 58016.

It is an arithmetic number, because the mean of its divisors is an integer number (187849524).

Almost surely, 2^1252143155 is an apocalyptic number.

1252143155 is a deficient number, since it is larger than the sum of its proper divisors (250653037).

1252143155 is an equidigital number, since it uses as much as digits as its factorization.

1252143155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37405.

The product of its digits is 6000, while the sum is 29.

The square root of 1252143155 is about 35385.6348678387. The cubic root of 1252143155 is about 1077.8326318389.

Adding to 1252143155 its reverse (5513412521), we get a palindrome (6765555676).

The spelling of 1252143155 in words is "one billion, two hundred fifty-two million, one hundred forty-three thousand, one hundred fifty-five".