10401240 has 32 divisors (see below), whose sum is σ = 31204080. Its totient is φ = 2773632.

The previous prime is 10401239. The next prime is 10401253. The reversal of 10401240 is 4210401.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43219 + ... + 43458.

Almost surely, 2^10401240 is an apocalyptic number.

10401240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10401240 is an abundant number, since it is smaller than the sum of its proper divisors (20802840).

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

10401240 is a wasteful number, since it uses less digits than its factorization.

10401240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86691 (or 86687 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 10401240 is about 3225.0953474277. The cubic root of 10401240 is about 218.2872514417.

Adding to 10401240 its reverse (4210401), we get a palindrome (14611641).

The spelling of 10401240 in words is "ten million, four hundred one thousand, two hundred forty".