405012026 has 8 divisors (see below), whose sum is σ = 607966560. Its totient is φ = 202356508.

The previous prime is 405011989. The next prime is 405012031. The reversal of 405012026 is 620210504.

It is a happy number.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 405011989 and 405012007.

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, 71336 + ... + 76803.

It is an arithmetic number, because the mean of its divisors is an integer number (75995820).

Almost surely, 2^405012026 is an apocalyptic number.

405012026 is a deficient number, since it is larger than the sum of its proper divisors (202954534).

405012026 is a wasteful number, since it uses less digits than its factorization.

405012026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149508.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 405012026 is about 20124.9105836523. The cubic root of 405012026 is about 739.8709453542.

The spelling of 405012026 in words is "four hundred five million, twelve thousand, twenty-six".