1401244042 has 16 divisors (see below), whose sum is σ = 2392638912. Its totient is φ = 609236320.

The previous prime is 1401244027. The next prime is 1401244043. The reversal of 1401244042 is 2404421041.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1401244043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1384123 + ... + 1385134.

It is an arithmetic number, because the mean of its divisors is an integer number (149539932).

Almost surely, 2^1401244042 is an apocalyptic number.

1401244042 is a deficient number, since it is larger than the sum of its proper divisors (991394870).

1401244042 is a wasteful number, since it uses less digits than its factorization.

1401244042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2769293.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 1401244042 is about 37433.1943868006. The cubic root of 1401244042 is about 1119.0202001793.

Adding to 1401244042 its reverse (2404421041), we get a palindrome (3805665083).

The spelling of 1401244042 in words is "one billion, four hundred one million, two hundred forty-four thousand, forty-two".