42020451403 has 32 divisors (see below), whose sum is σ = 51073818624. Its totient is φ = 33748918272.

The previous prime is 42020451391. The next prime is 42020451511. The reversal of 42020451403 is 30415402024.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42020451403 - 2⁵ = 42020451371 is a prime.

It is a super-2 number, since 2×42020451403² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42020751403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38656726 + ... + 38657812.

It is an arithmetic number, because the mean of its divisors is an integer number (1596056832).

Almost surely, 2^42020451403 is an apocalyptic number.

42020451403 is a deficient number, since it is larger than the sum of its proper divisors (9053367221).

42020451403 is a wasteful number, since it uses less digits than its factorization.

42020451403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251.

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 42020451403 its reverse (30415402024), we get a palindrome (72435853427).

The spelling of 42020451403 in words is "forty-two billion, twenty million, four hundred fifty-one thousand, four hundred three".