142012845 has 88 divisors (see below), whose sum is σ = 282725016. Its totient is φ = 68024448.

The previous prime is 142012841. The next prime is 142012847. The reversal of 142012845 is 548210241.

It can be written as a sum of positive squares in 4 ways, for example, as 17065161 + 124947684 = 4131^2 + 11178^2 .

It is not a de Polignac number, because 142012845 - 2² = 142012841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142012841) by changing a digit.

It is a polite number, since it can be written in 87 ways as a sum of consecutive naturals, for example, 3838167 + ... + 3838203.

Almost surely, 2^142012845 is an apocalyptic number.

142012845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142012845 is a deficient number, since it is larger than the sum of its proper divisors (140712171).

142012845 is an frugal number, since it uses more digits than its factorization.

142012845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 142012845 is about 11916.9142398525. The cubic root of 142012845 is about 521.7260750673.

The spelling of 142012845 in words is "one hundred forty-two million, twelve thousand, eight hundred forty-five".