1205455142 has 16 divisors (see below), whose sum is σ = 1915377840. Its totient is φ = 567026688.

The previous prime is 1205455109. The next prime is 1205455157. The reversal of 1205455142 is 2415545021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89558 + ... + 102134.

It is an arithmetic number, because the mean of its divisors is an integer number (119711115).

Almost surely, 2^1205455142 is an apocalyptic number.

1205455142 is a deficient number, since it is larger than the sum of its proper divisors (709922698).

1205455142 is a wasteful number, since it uses less digits than its factorization.

1205455142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15415.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 1205455142 is about 34719.6650617485. The cubic root of 1205455142 is about 1064.2664000956.

The spelling of 1205455142 in words is "one billion, two hundred five million, four hundred fifty-five thousand, one hundred forty-two".