401215426 has 4 divisors (see below), whose sum is σ = 601823142. Its totient is φ = 200607712.

The previous prime is 401215421. The next prime is 401215447. The reversal of 401215426 is 624512104.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 216119401 + 185096025 = 14701^2 + 13605^2 .

It is a super-2 number, since 2×401215426² = 321947636120722952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401215426.

It is not an unprimeable number, because it can be changed into a prime (401215421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100303855 + ... + 100303858.

Almost surely, 2^401215426 is an apocalyptic number.

401215426 is a deficient number, since it is larger than the sum of its proper divisors (200607716).

401215426 is a wasteful number, since it uses less digits than its factorization.

401215426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200607715.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 401215426 is about 20030.3626028088. The cubic root of 401215426 is about 737.5518230748.

The spelling of 401215426 in words is "four hundred one million, two hundred fifteen thousand, four hundred twenty-six".