42472101 has 8 divisors (see below), whose sum is σ = 64719424. Its totient is φ = 24269760.

The previous prime is 42472093. The next prime is 42472121. The reversal of 42472101 is 10127424.

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 42472101 - 2³ = 42472093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 2022481 = 42472101 / (4 + 2 + 4 + 7 + 2 + 1 + 0 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42472121) 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, 1011220 + ... + 1011261.

It is an arithmetic number, because the mean of its divisors is an integer number (8089928).

Almost surely, 2^42472101 is an apocalyptic number.

It is an amenable number.

42472101 is a deficient number, since it is larger than the sum of its proper divisors (22247323).

42472101 is a wasteful number, since it uses less digits than its factorization.

42472101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022491.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 42472101 is about 6517.0622983059. The cubic root of 42472101 is about 348.9002240755.

Adding to 42472101 its reverse (10127424), we get a palindrome (52599525).

The spelling of 42472101 in words is "forty-two million, four hundred seventy-two thousand, one hundred one".