400242151 has 8 divisors (see below), whose sum is σ = 412780544. Its totient is φ = 387850680.

The previous prime is 400242149. The next prime is 400242173. The reversal of 400242151 is 151242004.

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 400242151 - 2¹ = 400242149 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 (400242131) 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, 31185 + ... + 42106.

It is an arithmetic number, because the mean of its divisors is an integer number (51597568).

Almost surely, 2^400242151 is an apocalyptic number.

400242151 is the 11551-st hex number.

400242151 is a deficient number, since it is larger than the sum of its proper divisors (12538393).

400242151 is a wasteful number, since it uses less digits than its factorization.

400242151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73461.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 400242151 is about 20006.0528590724. The cubic root of 400242151 is about 736.9549517205.

Adding to 400242151 its reverse (151242004), we get a palindrome (551484155).

The spelling of 400242151 in words is "four hundred million, two hundred forty-two thousand, one hundred fifty-one".