142669845 has 24 divisors (see below), whose sum is σ = 249491736. Its totient is φ = 75414528.

The previous prime is 142669823. The next prime is 142669853. The reversal of 142669845 is 548966241.

It can be written as a sum of positive squares in 4 ways, for example, as 34596 + 142635249 = 186^2 + 11943^2 .

It is not a de Polignac number, because 142669845 - 2⁷ = 142669717 is a prime.

It is a super-3 number, since 3×142669845³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 142669845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8944 + ... + 19113.

It is an arithmetic number, because the mean of its divisors is an integer number (10395489).

Almost surely, 2^142669845 is an apocalyptic number.

142669845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142669845 is a deficient number, since it is larger than the sum of its proper divisors (106821891).

142669845 is a wasteful number, since it uses less digits than its factorization.

142669845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28181 (or 28178 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 142669845 is about 11944.4482919890. The cubic root of 142669845 is about 522.5293986190.

The spelling of 142669845 in words is "one hundred forty-two million, six hundred sixty-nine thousand, eight hundred forty-five".