1005235144 has 8 divisors (see below), whose sum is σ = 1884815910. Its totient is φ = 502617568.

The previous prime is 1005235141. The next prime is 1005235157. The reversal of 1005235144 is 4415325001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 857904100 + 147331044 = 29290^2 + 12138^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1005235141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62827189 + ... + 62827204.

Almost surely, 2^1005235144 is an apocalyptic number.

It is an amenable number.

1005235144 is a deficient number, since it is larger than the sum of its proper divisors (879580766).

1005235144 is a wasteful number, since it uses less digits than its factorization.

1005235144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125654399 (or 125654395 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1005235144 is about 31705.4434443046. The cubic root of 1005235144 is about 1001.7420116334.

The spelling of 1005235144 in words is "one billion, five million, two hundred thirty-five thousand, one hundred forty-four".