1401202142 has 16 divisors (see below), whose sum is σ = 2154352032. Its totient is φ = 683105280.

The previous prime is 1401202141. The next prime is 1401202157. The reversal of 1401202142 is 2412021041.

It is a self number, because there is not a number n which added to its sum of digits gives 1401202142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401202141) 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, 169223 + ... + 177309.

It is an arithmetic number, because the mean of its divisors is an integer number (134647002).

Almost surely, 2^1401202142 is an apocalyptic number.

1401202142 is a deficient number, since it is larger than the sum of its proper divisors (753149890).

1401202142 is a wasteful number, since it uses less digits than its factorization.

1401202142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10243.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1401202142 is about 37432.6347189187. The cubic root of 1401202142 is about 1119.0090464206.

Adding to 1401202142 its reverse (2412021041), we get a palindrome (3813223183).

The spelling of 1401202142 in words is "one billion, four hundred one million, two hundred two thousand, one hundred forty-two".