26421429 has 8 divisors (see below), whose sum is σ = 35406400. Its totient is φ = 17525376.

The previous prime is 26421427. The next prime is 26421463. The reversal of 26421429 is 92412462.

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

It is not a de Polignac number, because 26421429 - 2¹ = 26421427 is a prime.

It is a super-3 number, since 3×26421429³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26421396 and 26421405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26421427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21532 + ... + 22725.

It is an arithmetic number, because the mean of its divisors is an integer number (4425800).

Almost surely, 2^26421429 is an apocalyptic number.

It is an amenable number.

26421429 is a deficient number, since it is larger than the sum of its proper divisors (8984971).

26421429 is a wasteful number, since it uses less digits than its factorization.

26421429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44459.

The product of its digits is 6912, while the sum is 30.

The square root of 26421429 is about 5140.1779152088. The cubic root of 26421429 is about 297.8416534847.

The spelling of 26421429 in words is "twenty-six million, four hundred twenty-one thousand, four hundred twenty-nine".