1995042043 has 4 divisors (see below), whose sum is σ = 1996269880. Its totient is φ = 1993814208.

The previous prime is 1995042029. The next prime is 1995042053. The reversal of 1995042043 is 3402405991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3402405991 = 1877 ⋅1812683.

It is a cyclic number.

It is not a de Polignac number, because 1995042043 - 2¹⁷ = 1994910971 is a prime.

It is a super-2 number, since 2×1995042043² = 7960385506675227698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1995041993 and 1995042011.

It is not an unprimeable number, because it can be changed into a prime (1995042013) 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, 611478 + ... + 614731.

It is an arithmetic number, because the mean of its divisors is an integer number (499067470).

Almost surely, 2^1995042043 is an apocalyptic number.

1995042043 is a deficient number, since it is larger than the sum of its proper divisors (1227837).

1995042043 is a wasteful number, since it uses less digits than its factorization.

1995042043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227836.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 1995042043 is about 44665.8935094777. The cubic root of 1995042043 is about 1258.8790826837.

The spelling of 1995042043 in words is "one billion, nine hundred ninety-five million, forty-two thousand, forty-three".