40262421 has 4 divisors (see below), whose sum is σ = 53683232. Its totient is φ = 26841612.

The previous prime is 40262419. The next prime is 40262423. The reversal of 40262421 is 12426204.

40262421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (40262419) and next prime (40262423).

It is not a de Polignac number, because 40262421 - 2¹ = 40262419 is a prime.

It is a super-3 number, since 3×40262421³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40262423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6710401 + ... + 6710406.

It is an arithmetic number, because the mean of its divisors is an integer number (13420808).

Almost surely, 2^40262421 is an apocalyptic number.

It is an amenable number.

40262421 is a deficient number, since it is larger than the sum of its proper divisors (13420811).

40262421 is a wasteful number, since it uses less digits than its factorization.

40262421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13420810.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 40262421 is about 6345.2676066499. The cubic root of 40262421 is about 342.7414490847.

Adding to 40262421 its reverse (12426204), we get a palindrome (52688625).

The spelling of 40262421 in words is "forty million, two hundred sixty-two thousand, four hundred twenty-one".