1142785001 has 4 divisors (see below), whose sum is σ = 1202931600. Its totient is φ = 1082638404.

The previous prime is 1142784967. The next prime is 1142785019. The reversal of 1142785001 is 1005872411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1005872411 = 8291 ⋅121321.

It is a cyclic number.

It is not a de Polignac number, because 1142785001 - 2¹⁰ = 1142783977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142785051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30073271 + ... + 30073308.

It is an arithmetic number, because the mean of its divisors is an integer number (300732900).

Almost surely, 2^1142785001 is an apocalyptic number.

It is an amenable number.

1142785001 is a deficient number, since it is larger than the sum of its proper divisors (60146599).

1142785001 is an equidigital number, since it uses as much as digits as its factorization.

1142785001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60146598.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 1142785001 is about 33805.1031798455. The cubic root of 1142785001 is about 1045.4939175940.

The spelling of 1142785001 in words is "one billion, one hundred forty-two million, seven hundred eighty-five thousand, one".