1145420242 has 8 divisors (see below), whose sum is σ = 1719317196. Its totient is φ = 572314512.

The previous prime is 1145420233. The next prime is 1145420249. The reversal of 1145420242 is 2420245411.

It can be written as a sum of positive squares in 2 ways, for example, as 885598081 + 259822161 = 29759^2 + 16119^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1145420249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194173 + ... + 199984.

Almost surely, 2^1145420242 is an apocalyptic number.

1145420242 is a deficient number, since it is larger than the sum of its proper divisors (573896954).

1145420242 is a wasteful number, since it uses less digits than its factorization.

1145420242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395612.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 1145420242 is about 33844.0577058957. The cubic root of 1145420242 is about 1046.2969305215.

Adding to 1145420242 its reverse (2420245411), we get a palindrome (3565665653).

The spelling of 1145420242 in words is "one billion, one hundred forty-five million, four hundred twenty thousand, two hundred forty-two".