42435811 has 4 divisors (see below), whose sum is σ = 46293624. Its totient is φ = 38578000.

The previous prime is 42435773. The next prime is 42435821. The reversal of 42435811 is 11853424.

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

It is a cyclic number.

It is not a de Polignac number, because 42435811 - 2¹¹ = 42433763 is a prime.

It is a super-3 number, since 3×42435811³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42435811.

It is not an unprimeable number, because it can be changed into a prime (42435821) 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, 1928890 + ... + 1928911.

It is an arithmetic number, because the mean of its divisors is an integer number (11573406).

Almost surely, 2^42435811 is an apocalyptic number.

42435811 is a deficient number, since it is larger than the sum of its proper divisors (3857813).

42435811 is a wasteful number, since it uses less digits than its factorization.

42435811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857812.

The product of its digits is 3840, while the sum is 28.

The square root of 42435811 is about 6514.2774733657. The cubic root of 42435811 is about 348.8008239458.

The spelling of 42435811 in words is "forty-two million, four hundred thirty-five thousand, eight hundred eleven".