42961969 has 4 divisors (see below), whose sum is σ = 43202160. Its totient is φ = 42721780.

The previous prime is 42961949. The next prime is 42961987. The reversal of 42961969 is 96916924.

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.

It is a cyclic number.

It is not a de Polignac number, because 42961969 - 2¹⁷ = 42830897 is a prime.

It is a super-2 number, since 2×42961969² = 3691461560713922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42961949) 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, 119827 + ... + 120184.

It is an arithmetic number, because the mean of its divisors is an integer number (10800540).

Almost surely, 2^42961969 is an apocalyptic number.

It is an amenable number.

42961969 is a deficient number, since it is larger than the sum of its proper divisors (240191).

42961969 is a wasteful number, since it uses less digits than its factorization.

42961969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240190.

The product of its digits is 209952, while the sum is 46.

The square root of 42961969 is about 6554.5380462699. The cubic root of 42961969 is about 350.2364905105.

The spelling of 42961969 in words is "forty-two million, nine hundred sixty-one thousand, nine hundred sixty-nine".