42926405 has 8 divisors (see below), whose sum is σ = 51588600. Its totient is φ = 34289856.

The previous prime is 42926393. The next prime is 42926417. The reversal of 42926405 is 50462924.

It is an interprime number because it is at equal distance from previous prime (42926393) and next prime (42926417).

It can be written as a sum of positive squares in 4 ways, for example, as 9205156 + 33721249 = 3034^2 + 5807^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 42926405 - 2¹⁸ = 42664261 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2510 + ... + 9599.

It is an arithmetic number, because the mean of its divisors is an integer number (6448575).

Almost surely, 2^42926405 is an apocalyptic number.

It is an amenable number.

42926405 is a deficient number, since it is larger than the sum of its proper divisors (8662195).

42926405 is a wasteful number, since it uses less digits than its factorization.

42926405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12823.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 42926405 is about 6551.8245550381. The cubic root of 42926405 is about 350.1398216861.

The spelling of 42926405 in words is "forty-two million, nine hundred twenty-six thousand, four hundred five".