1356637042 has 8 divisors (see below), whose sum is σ = 2089954476. Its totient is φ = 659985552.

The previous prime is 1356637039. The next prime is 1356637067. The reversal of 1356637042 is 2407366531.

It can be written as a sum of positive squares in 2 ways, for example, as 1254647241 + 101989801 = 35421^2 + 10099^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 1356636992 and 1356637010.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9166393 + ... + 9166540.

Almost surely, 2^1356637042 is an apocalyptic number.

1356637042 is a deficient number, since it is larger than the sum of its proper divisors (733317434).

1356637042 is a wasteful number, since it uses less digits than its factorization.

1356637042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18332972.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 1356637042 is about 36832.5541063880. The cubic root of 1356637042 is about 1107.0176800400.

The spelling of 1356637042 in words is "one billion, three hundred fifty-six million, six hundred thirty-seven thousand, forty-two".