1042240140 has 36 divisors (see below), whose sum is σ = 3161462304. Its totient is φ = 277930656.

The previous prime is 1042240139. The next prime is 1042240159. The reversal of 1042240140 is 410422401.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2894932 + ... + 2895291.

Almost surely, 2^1042240140 is an apocalyptic number.

1042240140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1042240140 is an abundant number, since it is smaller than the sum of its proper divisors (2119222164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1042240140 is a wasteful number, since it uses less digits than its factorization.

1042240140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5790238 (or 5790233 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1042240140 is about 32283.7442066437. The cubic root of 1042240140 is about 1013.8863241030.

Adding to 1042240140 its reverse (410422401), we get a palindrome (1452662541).

The spelling of 1042240140 in words is "one billion, forty-two million, two hundred forty thousand, one hundred forty".