142478290 has 8 divisors (see below), whose sum is σ = 256460940. Its totient is φ = 56991312.

The previous prime is 142478267. The next prime is 142478299. The reversal of 142478290 is 92874241.

142478290 is nontrivially palindromic in base 4.

142478290 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 141348321 + 1129969 = 11889^2 + 1063^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (142478299) 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, 7123905 + ... + 7123924.

Almost surely, 2^142478290 is an apocalyptic number.

142478290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142478290 is a deficient number, since it is larger than the sum of its proper divisors (113982650).

142478290 is a wasteful number, since it uses less digits than its factorization.

142478290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14247836.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 142478290 is about 11936.4270198414. The cubic root of 142478290 is about 522.2954366609.

The spelling of 142478290 in words is "one hundred forty-two million, four hundred seventy-eight thousand, two hundred ninety".