142661145 has 16 divisors (see below), whose sum is σ = 249008832. Its totient is φ = 69168960.

The previous prime is 142661131. The next prime is 142661153. The reversal of 142661145 is 541166241.

It is not a de Polignac number, because 142661145 - 2¹⁰ = 142660121 is a prime.

It is a super-2 number, since 2×142661145² = 40704404585422050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432142 + ... + 432471.

It is an arithmetic number, because the mean of its divisors is an integer number (15563052).

Almost surely, 2^142661145 is an apocalyptic number.

142661145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142661145 is a deficient number, since it is larger than the sum of its proper divisors (106347687).

142661145 is a wasteful number, since it uses less digits than its factorization.

142661145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864632.

The product of its digits is 5760, while the sum is 30.

The square root of 142661145 is about 11944.0841005077. The cubic root of 142661145 is about 522.5187771310.

The spelling of 142661145 in words is "one hundred forty-two million, six hundred sixty-one thousand, one hundred forty-five".