142030402 has 4 divisors (see below), whose sum is σ = 213045606. Its totient is φ = 71015200.

The previous prime is 142030373. The next prime is 142030403. The reversal of 142030402 is 204030241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 112338801 + 29691601 = 10599^2 + 5449^2 .

It is not an unprimeable number, because it can be changed into a prime (142030403) 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 as a sum of consecutive naturals, namely, 35507599 + ... + 35507602.

Almost surely, 2^142030402 is an apocalyptic number.

142030402 is a deficient number, since it is larger than the sum of its proper divisors (71015204).

142030402 is an equidigital number, since it uses as much as digits as its factorization.

142030402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71015203.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 142030402 is about 11917.6508591249. The cubic root of 142030402 is about 521.7475744541.

Adding to 142030402 its reverse (204030241), we get a palindrome (346060643).

The spelling of 142030402 in words is "one hundred forty-two million, thirty thousand, four hundred two".