142120004 has 12 divisors (see below), whose sum is σ = 267841644. Its totient is φ = 65593824.

The previous prime is 142120003. The next prime is 142120007. The reversal of 142120004 is 400021241.

It can be written as a sum of positive squares in 2 ways, for example, as 15602500 + 126517504 = 3950^2 + 11248^2 .

It is not an unprimeable number, because it can be changed into a prime (142120001) 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, 1366487 + ... + 1366590.

It is an arithmetic number, because the mean of its divisors is an integer number (22320137).

Almost surely, 2^142120004 is an apocalyptic number.

It is an amenable number.

142120004 is a deficient number, since it is larger than the sum of its proper divisors (125721640).

142120004 is a wasteful number, since it uses less digits than its factorization.

142120004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733094 (or 2733092 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 142120004 is about 11921.4094804264. The cubic root of 142120004 is about 521.8572688061.

Adding to 142120004 its reverse (400021241), we get a palindrome (542141245).

The spelling of 142120004 in words is "one hundred forty-two million, one hundred twenty thousand, four".