142745634 has 36 divisors (see below), whose sum is σ = 327955446. Its totient is φ = 44717376.

The previous prime is 142745621. The next prime is 142745663. The reversal of 142745634 is 436547241.

142745634 is a `hidden beast` number, since 14 + 2 + 7 + 4 + 5 + 634 = 666.

It can be written as a sum of positive squares in only one way, i.e., 104960025 + 37785609 = 10245^2 + 6147^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 208657 + ... + 209339.

Almost surely, 2^142745634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142745634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163977723).

142745634 is an abundant number, since it is smaller than the sum of its proper divisors (185209812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142745634 is an equidigital number, since it uses as much as digits as its factorization.

142745634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391 (or 705 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 142745634 is about 11947.6204325380. The cubic root of 142745634 is about 522.6219081708.

The spelling of 142745634 in words is "one hundred forty-two million, seven hundred forty-five thousand, six hundred thirty-four".