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42111205 = 58422241
BaseRepresentation
bin1010000010100…
…1000011100101
32221020110201021
42200221003211
541240024310
64102331141
71020640123
oct240510345
987213637
1042111205
1121852854
1212129ab1
138955796
145842913
153a6c5da
hex28290e5

42111205 has 4 divisors (see below), whose sum is σ = 50533452. Its totient is φ = 33688960.

The previous prime is 42111131. The next prime is 42111211. The reversal of 42111205 is 50211124.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7935489 + 34175716 = 2817^2 + 5846^2 .

It is not a de Polignac number, because 42111205 - 27 = 42111077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4211116 + ... + 4211125.

It is an arithmetic number, because the mean of its divisors is an integer number (12633363).

Almost surely, 242111205 is an apocalyptic number.

It is an amenable number.

42111205 is a deficient number, since it is larger than the sum of its proper divisors (8422247).

42111205 is an equidigital number, since it uses as much as digits as its factorization.

42111205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8422246.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 42111205 is about 6489.3146787623. The cubic root of 42111205 is about 347.9091810613.

Adding to 42111205 its reverse (50211124), we get a palindrome (92322329).

It can be divided in two parts, 4 and 2111205, that added together give a square (2111209 = 14532).

The spelling of 42111205 in words is "forty-two million, one hundred eleven thousand, two hundred five".

Divisors: 1 5 8422241 42111205