1355245043 has 4 divisors (see below), whose sum is σ = 1356009480. Its totient is φ = 1354480608.

The previous prime is 1355245019. The next prime is 1355245051. The reversal of 1355245043 is 3405425531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3405425531 = 257 ⋅13250683.

It is a cyclic number.

It is not a de Polignac number, because 1355245043 - 2¹² = 1355240947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1355245093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379553 + ... + 383106.

It is an arithmetic number, because the mean of its divisors is an integer number (339002370).

Almost surely, 2^1355245043 is an apocalyptic number.

1355245043 is a deficient number, since it is larger than the sum of its proper divisors (764437).

1355245043 is an equidigital number, since it uses as much as digits as its factorization.

1355245043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764436.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 1355245043 is about 36813.6529428961. The cubic root of 1355245043 is about 1106.6389261062.

The spelling of 1355245043 in words is "one billion, three hundred fifty-five million, two hundred forty-five thousand, forty-three".