1273403142 has 96 divisors (see below), whose sum is σ = 3306251520. Its totient is φ = 349652160.

The previous prime is 1273403113. The next prime is 1273403143. The reversal of 1273403142 is 2413043721.

It is a happy number.

1273403142 is a `hidden beast` number, since 1 + 2 + 7 + 340 + 314 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1273403143) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79168 + ... + 93884.

It is an arithmetic number, because the mean of its divisors is an integer number (34440120).

Almost surely, 2^1273403142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1273403142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1653125760).

1273403142 is an abundant number, since it is smaller than the sum of its proper divisors (2032848378).

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

1273403142 is a wasteful number, since it uses less digits than its factorization.

1273403142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14778 (or 14775 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 1273403142 is about 35684.7746525041. The cubic root of 1273403142 is about 1083.8985593133.

Adding to 1273403142 its reverse (2413043721), we get a palindrome (3686446863).

The spelling of 1273403142 in words is "one billion, two hundred seventy-three million, four hundred three thousand, one hundred forty-two".