961021042 has 4 divisors (see below), whose sum is σ = 1441531566. Its totient is φ = 480510520.

The previous prime is 961021027. The next prime is 961021051. The reversal of 961021042 is 240120169.

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

It can be written as a sum of positive squares in only one way, i.e., 905949801 + 55071241 = 30099^2 + 7421^2 .

It is a super-2 number, since 2×961021042² = 1847122886333531528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 961020998 and 961021016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240255259 + ... + 240255262.

Almost surely, 2^961021042 is an apocalyptic number.

961021042 is a deficient number, since it is larger than the sum of its proper divisors (480510524).

961021042 is a wasteful number, since it uses less digits than its factorization.

961021042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480510523.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 961021042 is about 31000.3393852390. The cubic root of 961021042 is about 986.8344427732.

The spelling of 961021042 in words is "nine hundred sixty-one million, twenty-one thousand, forty-two".