1042100421 has 8 divisors (see below), whose sum is σ = 1413017760. Its totient is φ = 682958352.

The previous prime is 1042100401. The next prime is 1042100431. The reversal of 1042100421 is 1240012401.

1042100421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1042100421 - 2¹⁰ = 1042099397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1042100421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042100401) 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, 2943610 + ... + 2943963.

It is an arithmetic number, because the mean of its divisors is an integer number (176627220).

Almost surely, 2^1042100421 is an apocalyptic number.

It is an amenable number.

1042100421 is a deficient number, since it is larger than the sum of its proper divisors (370917339).

1042100421 is an equidigital number, since it uses as much as digits as its factorization.

1042100421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5887635.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1042100421 is about 32281.5802122511. The cubic root of 1042100421 is about 1013.8410160821.

Adding to 1042100421 its reverse (1240012401), we get a palindrome (2282112822).

The spelling of 1042100421 in words is "one billion, forty-two million, one hundred thousand, four hundred twenty-one".