1190042520778 has 4 divisors (see below), whose sum is σ = 1785063781170. Its totient is φ = 595021260388.

The previous prime is 1190042520769. The next prime is 1190042520787. The reversal of 1190042520778 is 8770252400911.

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

It is an interprime number because it is at equal distance from previous prime (1190042520769) and next prime (1190042520787).

It can be written as a sum of positive squares in only one way, i.e., 771300228169 + 418742292609 = 878237^2 + 647103^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 297510630193 + ... + 297510630196.

Almost surely, 2^{1190042520778} is an apocalyptic number.

1190042520778 is a deficient number, since it is larger than the sum of its proper divisors (595021260392).

1190042520778 is an equidigital number, since it uses as much as digits as its factorization.

1190042520778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595021260391.

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 1190042520778 in words is "one trillion, one hundred ninety billion, forty-two million, five hundred twenty thousand, seven hundred seventy-eight".