1305235142 has 8 divisors (see below), whose sum is σ = 2042976816.
Its totient is φ = 624242872.
The previous prime is 1305235069. The next prime is 1305235147. The reversal of 1305235142 is 2415325031.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1305235147) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14187293 + ... + 14187384.
It is an arithmetic number, because the mean of its divisors is an integer number (255372102).
Almost surely, 21305235142 is an apocalyptic number.
1305235142 is a deficient number, since it is larger than the sum of its proper divisors (737741674).
1305235142 is a wasteful number, since it uses less digits than its factorization.
1305235142 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 28374702.
The product of its (nonzero) digits is 3600, while the sum is 26.
The square root of 1305235142 is about 36128.0381698204.
The cubic root of 1305235142 is about 1092.8559456818.
The spelling of 1305235142 in words is "one billion, three hundred five million, two hundred thirty-five thousand, one hundred forty-two".