1042142194 has 8 divisors (see below), whose sum is σ = 1655167068. Its totient is φ = 490419840.

The previous prime is 1042142083. The next prime is 1042142197. The reversal of 1042142194 is 4912412401.

It can be written as a sum of positive squares in 2 ways, for example, as 1029447225 + 12694969 = 32085^2 + 3563^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1042142197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15325587 + ... + 15325654.

Almost surely, 2^1042142194 is an apocalyptic number.

1042142194 is a deficient number, since it is larger than the sum of its proper divisors (613024874).

1042142194 is a wasteful number, since it uses less digits than its factorization.

1042142194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30651260.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1042142194 is about 32282.2272156058. The cubic root of 1042142194 is about 1013.8545626381.

Adding to 1042142194 its reverse (4912412401), we get a palindrome (5954554595).

The spelling of 1042142194 in words is "one billion, forty-two million, one hundred forty-two thousand, one hundred ninety-four".