1451111442 has 64 divisors (see below), whose sum is σ = 3257210880. Its totient is φ = 427164800.

The previous prime is 1451111437. The next prime is 1451111443. The reversal of 1451111442 is 2441111541.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1451111443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 710659 + ... + 712697.

It is an arithmetic number, because the mean of its divisors is an integer number (50893920).

Almost surely, 2^1451111442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1451111442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1628605440).

1451111442 is an abundant number, since it is smaller than the sum of its proper divisors (1806099438).

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

1451111442 is a wasteful number, since it uses less digits than its factorization.

1451111442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2359.

The product of its digits is 640, while the sum is 24.

The square root of 1451111442 is about 38093.4566822177. The cubic root of 1451111442 is about 1132.1403145085.

Adding to 1451111442 its reverse (2441111541), we get a palindrome (3892222983).

Subtracting 1451111442 from its reverse (2441111541), we obtain a palindrome (990000099).

The spelling of 1451111442 in words is "one billion, four hundred fifty-one million, one hundred eleven thousand, four hundred forty-two".