1497681442 has 4 divisors (see below), whose sum is σ = 2246522166. Its totient is φ = 748840720.

The previous prime is 1497681439. The next prime is 1497681467. The reversal of 1497681442 is 2441867941.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1496219761 + 1461681 = 38681^2 + 1209^2 .

It is a super-2 number, since 2×1497681442² = 4486099403422398728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1497681392 and 1497681401.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 374420359 + ... + 374420362.

Almost surely, 2^1497681442 is an apocalyptic number.

1497681442 is a deficient number, since it is larger than the sum of its proper divisors (748840724).

1497681442 is an equidigital number, since it uses as much as digits as its factorization.

1497681442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748840723.

The product of its digits is 387072, while the sum is 46.

The square root of 1497681442 is about 38699.8894313666. The cubic root of 1497681442 is about 1144.1241414380.

The spelling of 1497681442 in words is "one billion, four hundred ninety-seven million, six hundred eighty-one thousand, four hundred forty-two".