421126031 has 8 divisors (see below), whose sum is σ = 424917504. Its totient is φ = 417342240.

The previous prime is 421126019. The next prime is 421126037. The reversal of 421126031 is 130621124.

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 421126031 - 2¹⁸ = 420863887 is a prime.

It is a super-2 number, since 2×421126031² = 354694267971625922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421125994 and 421126012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421126037) 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, 188501 + ... + 190721.

It is an arithmetic number, because the mean of its divisors is an integer number (53114688).

Almost surely, 2^421126031 is an apocalyptic number.

421126031 is a deficient number, since it is larger than the sum of its proper divisors (3791473).

421126031 is a wasteful number, since it uses less digits than its factorization.

421126031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3841.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 421126031 is about 20521.3554864195. The cubic root of 421126031 is about 749.5559036083. Note that the first 3 decimals are identical.

Adding to 421126031 its reverse (130621124), we get a palindrome (551747155).

The spelling of 421126031 in words is "four hundred twenty-one million, one hundred twenty-six thousand, thirty-one".