151240405 has 8 divisors (see below), whose sum is σ = 181910232. Its totient is φ = 120711168.

The previous prime is 151240403. The next prime is 151240421. The reversal of 151240405 is 504042151.

It can be written as a sum of positive squares in 4 ways, for example, as 97969 + 151142436 = 313^2 + 12294^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 151240405 - 2¹ = 151240403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151240403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32764 + ... + 37093.

It is an arithmetic number, because the mean of its divisors is an integer number (22738779).

Almost surely, 2^151240405 is an apocalyptic number.

It is an amenable number.

151240405 is a deficient number, since it is larger than the sum of its proper divisors (30669827).

151240405 is an equidigital number, since it uses as much as digits as its factorization.

151240405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70295.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 151240405 is about 12297.9837778394. The cubic root of 151240405 is about 532.7898515297.

Adding to 151240405 its reverse (504042151), we get a palindrome (655282556).

The spelling of 151240405 in words is "one hundred fifty-one million, two hundred forty thousand, four hundred five".