1042025655421 has 4 divisors (see below), whose sum is σ = 1044864962752. Its totient is φ = 1039186348092.

The previous prime is 1042025655383. The next prime is 1042025655439. The reversal of 1042025655421 is 1245565202401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1042025655421 - 2⁹ = 1042025654909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042025655221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1419653115 + ... + 1419653848.

It is an arithmetic number, because the mean of its divisors is an integer number (261216240688).

Almost surely, 2^{1042025655421} is an apocalyptic number.

It is an amenable number.

1042025655421 is a deficient number, since it is larger than the sum of its proper divisors (2839307331).

1042025655421 is an equidigital number, since it uses as much as digits as its factorization.

1042025655421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2839307330.

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 1042025655421 in words is "one trillion, forty-two billion, twenty-five million, six hundred fifty-five thousand, four hundred twenty-one".