26405442 has 24 divisors (see below), whose sum is σ = 65385216. Its totient is φ = 7544376.

The previous prime is 26405429. The next prime is 26405443. The reversal of 26405442 is 24450462.

It is a super-3 number, since 3×26405442³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (26405443) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 104658 + ... + 104909.

It is an arithmetic number, because the mean of its divisors is an integer number (2724384).

Almost surely, 2^26405442 is an apocalyptic number.

26405442 is an abundant number, since it is smaller than the sum of its proper divisors (38979774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26405442 is a wasteful number, since it uses less digits than its factorization.

26405442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209582 (or 209579 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 26405442 is about 5138.6225780845. The cubic root of 26405442 is about 297.7815689826.

The spelling of 26405442 in words is "twenty-six million, four hundred five thousand, four hundred forty-two".