42145401 has 8 divisors (see below), whose sum is σ = 59151520. Its totient is φ = 26618112.

The previous prime is 42145379. The next prime is 42145403. The reversal of 42145401 is 10454124.

It is a happy number.

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

It is not a de Polignac number, because 42145401 - 2⁹ = 42144889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42145403) 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, 369640 + ... + 369753.

It is an arithmetic number, because the mean of its divisors is an integer number (7393940).

Almost surely, 2^42145401 is an apocalyptic number.

It is an amenable number.

42145401 is a deficient number, since it is larger than the sum of its proper divisors (17006119).

42145401 is a wasteful number, since it uses less digits than its factorization.

42145401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739415.

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

The square root of 42145401 is about 6491.9489369526. The cubic root of 42145401 is about 348.0033276865.

Adding to 42145401 its reverse (10454124), we get a palindrome (52599525).

The spelling of 42145401 in words is "forty-two million, one hundred forty-five thousand, four hundred one".