240001407 has 32 divisors (see below), whose sum is σ = 375379200. Its totient is φ = 151131744.

The previous prime is 240001403. The next prime is 240001409. The reversal of 240001407 is 704100042.

It is a happy number.

It is not a de Polignac number, because 240001407 - 2² = 240001403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240001407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240001403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 300733 + ... + 301529.

It is an arithmetic number, because the mean of its divisors is an integer number (11730600).

Almost surely, 2^240001407 is an apocalyptic number.

240001407 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

240001407 is a deficient number, since it is larger than the sum of its proper divisors (135377793).

240001407 is a wasteful number, since it uses less digits than its factorization.

240001407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412 (or 1406 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 240001407 is about 15491.9787954928. The cubic root of 240001407 is about 621.4477155984.

Adding to 240001407 its reverse (704100042), we get a palindrome (944101449).

The spelling of 240001407 in words is "two hundred forty million, one thousand, four hundred seven".