1042420551225 has 24 divisors (see below), whose sum is σ = 1725433940160. Its totient is φ = 555323661120.

The previous prime is 1042420551197. The next prime is 1042420551233. The reversal of 1042420551225 is 5221550242401.

It is not a de Polignac number, because 1042420551225 - 2²² = 1042416356921 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7858365 + ... + 7989914.

It is an arithmetic number, because the mean of its divisors is an integer number (71893080840).

Almost surely, 2^{1042420551225} is an apocalyptic number.

1042420551225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1042420551225 is a deficient number, since it is larger than the sum of its proper divisors (683013388935).

1042420551225 is a wasteful number, since it uses less digits than its factorization.

1042420551225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15849169 (or 15849164 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 33.

Adding to 1042420551225 its reverse (5221550242401), we get a palindrome (6263970793626).

The spelling of 1042420551225 in words is "one trillion, forty-two billion, four hundred twenty million, five hundred fifty-one thousand, two hundred twenty-five".