42404151 has 8 divisors (see below), whose sum is σ = 56568960. Its totient is φ = 28254392.

The previous prime is 42404147. The next prime is 42404189. The reversal of 42404151 is 15140424.

It is a happy number.

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 42404151 - 2² = 42404147 is a prime.

It is a super-2 number, since 2×42404151² = 3596224044061602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42404251) 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, 9046 + ... + 12908.

It is an arithmetic number, because the mean of its divisors is an integer number (7071120).

Almost surely, 2^42404151 is an apocalyptic number.

42404151 is a deficient number, since it is larger than the sum of its proper divisors (14164809).

42404151 is a wasteful number, since it uses less digits than its factorization.

42404151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7525.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 42404151 is about 6511.8469730177. The cubic root of 42404151 is about 348.7140593221.

Adding to 42404151 its reverse (15140424), we get a palindrome (57544575).

The spelling of 42404151 in words is "forty-two million, four hundred four thousand, one hundred fifty-one".