1351506242 has 4 divisors (see below), whose sum is σ = 2027259366. Its totient is φ = 675753120.

The previous prime is 1351506217. The next prime is 1351506251. The reversal of 1351506242 is 2426051531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2426051531 = 7681 ⋅315851.

It can be written as a sum of positive squares in only one way, i.e., 1042062961 + 309443281 = 32281^2 + 17591^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337876559 + ... + 337876562.

Almost surely, 2^1351506242 is an apocalyptic number.

1351506242 is a deficient number, since it is larger than the sum of its proper divisors (675753124).

1351506242 is an equidigital number, since it uses as much as digits as its factorization.

1351506242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675753123.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1351506242 is about 36762.8377849154. The cubic root of 1351506242 is about 1105.6203370364.

Adding to 1351506242 its reverse (2426051531), we get a palindrome (3777557773).

The spelling of 1351506242 in words is "one billion, three hundred fifty-one million, five hundred six thousand, two hundred forty-two".