1042139140 has 48 divisors (see below), whose sum is σ = 2520870912. Its totient is φ = 354485376.

The previous prime is 1042139093. The next prime is 1042139141. The reversal of 1042139140 is 419312401.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1042139141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11527 + ... + 47086.

It is an arithmetic number, because the mean of its divisors is an integer number (52518144).

Almost surely, 2^1042139140 is an apocalyptic number.

1042139140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1042139140 is an abundant number, since it is smaller than the sum of its proper divisors (1478731772).

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

1042139140 is a wasteful number, since it uses less digits than its factorization.

1042139140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58756 (or 58754 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1042139140 is about 32282.1799140021. The cubic root of 1042139140 is about 1013.8535722694.

The spelling of 1042139140 in words is "one billion, forty-two million, one hundred thirty-nine thousand, one hundred forty".