1253420143 has 8 divisors (see below), whose sum is σ = 1284703056. Its totient is φ = 1222171200.

The previous prime is 1253420137. The next prime is 1253420153. The reversal of 1253420143 is 3410243521.

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 1253420143 - 2¹⁷ = 1253289071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253420123) 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, 76728 + ... + 91618.

It is an arithmetic number, because the mean of its divisors is an integer number (160587882).

Almost surely, 2^1253420143 is an apocalyptic number.

1253420143 is a deficient number, since it is larger than the sum of its proper divisors (31282913).

1253420143 is a wasteful number, since it uses less digits than its factorization.

1253420143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16985.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1253420143 is about 35403.6741454895. The cubic root of 1253420143 is about 1078.1989136281.

Adding to 1253420143 its reverse (3410243521), we get a palindrome (4663663664).

The spelling of 1253420143 in words is "one billion, two hundred fifty-three million, four hundred twenty thousand, one hundred forty-three".