142039040 has 192 divisors, whose sum is σ = 404520480. Its totient is φ = 47185920.

The previous prime is 142039033. The next prime is 142039043. The reversal of 142039040 is 40930241.

It is a junction number, because it is equal to n+sod(n) for n = 142038997 and 142039015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142039043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1464272 + ... + 1464368.

Almost surely, 2^142039040 is an apocalyptic number.

142039040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142039040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202260240).

142039040 is an abundant number, since it is smaller than the sum of its proper divisors (262481440).

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

142039040 is a wasteful number, since it uses less digits than its factorization.

142039040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 142039040 is about 11918.0132572506. The cubic root of 142039040 is about 521.7581514483.

Adding to 142039040 its reverse (40930241), we get a palindrome (182969281).

The spelling of 142039040 in words is "one hundred forty-two million, thirty-nine thousand, forty".