1205401542 has 16 divisors (see below), whose sum is σ = 2466868800. Its totient is φ = 392456232.

The previous prime is 1205401531. The next prime is 1205401543. The reversal of 1205401542 is 2451045021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205401543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2335792 + ... + 2336307.

It is an arithmetic number, because the mean of its divisors is an integer number (154179300).

Almost surely, 2^1205401542 is an apocalyptic number.

1205401542 is an abundant number, since it is smaller than the sum of its proper divisors (1261467258).

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

1205401542 is a wasteful number, since it uses less digits than its factorization.

1205401542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4672147.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1205401542 is about 34718.8931563205. The cubic root of 1205401542 is about 1064.2506258257.

Adding to 1205401542 its reverse (2451045021), we get a palindrome (3656446563).

The spelling of 1205401542 in words is "one billion, two hundred five million, four hundred one thousand, five hundred forty-two".