1401321042 has 48 divisors (see below), whose sum is σ = 3393018720. Its totient is φ = 414283200.

The previous prime is 1401321037. The next prime is 1401321059. The reversal of 1401321042 is 2401231041.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78192 + ... + 94427.

It is an arithmetic number, because the mean of its divisors is an integer number (70687890).

Almost surely, 2^1401321042 is an apocalyptic number.

1401321042 is an abundant number, since it is smaller than the sum of its proper divisors (1991697678).

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

1401321042 is a wasteful number, since it uses less digits than its factorization.

1401321042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172679 (or 172676 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1401321042 is about 37434.2228715917. Note that the first 3 decimals coincide. The cubic root of 1401321042 is about 1119.0406969604.

Adding to 1401321042 its reverse (2401231041), we get a palindrome (3802552083).

Subtracting 1401321042 from its reverse (2401231041), we obtain a palindrome (999909999).

The spelling of 1401321042 in words is "one billion, four hundred one million, three hundred twenty-one thousand, forty-two".