1406031442 has 4 divisors (see below), whose sum is σ = 2109047166. Its totient is φ = 703015720.

The previous prime is 1406031437. The next prime is 1406031457. The reversal of 1406031442 is 2441306041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2441306041 = 577 ⋅4231033.

It can be written as a sum of positive squares in only one way, i.e., 1311960841 + 94070601 = 36221^2 + 9699^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 351507859 + ... + 351507862.

Almost surely, 2^1406031442 is an apocalyptic number.

1406031442 is a deficient number, since it is larger than the sum of its proper divisors (703015724).

1406031442 is an equidigital number, since it uses as much as digits as its factorization.

1406031442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703015723.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1406031442 is about 37497.0857800976. The cubic root of 1406031442 is about 1120.2931423368.

Adding to 1406031442 its reverse (2441306041), we get a palindrome (3847337483).

The spelling of 1406031442 in words is "one billion, four hundred six million, thirty-one thousand, four hundred forty-two".