142144490 has 16 divisors (see below), whose sum is σ = 256524840. Its totient is φ = 56710080.

The previous prime is 142144477. The next prime is 142144501. The reversal of 142144490 is 94441241.

It can be written as a sum of positive squares in 4 ways, for example, as 128074489 + 14070001 = 11317^2 + 3751^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14381 + ... + 22160.

Almost surely, 2^142144490 is an apocalyptic number.

142144490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142144490 is a deficient number, since it is larger than the sum of its proper divisors (114380350).

142144490 is a wasteful number, since it uses less digits than its factorization.

142144490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36937.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 142144490 is about 11922.4364120762. The cubic root of 142144490 is about 521.8872375248.

The spelling of 142144490 in words is "one hundred forty-two million, one hundred forty-four thousand, four hundred ninety".