1201342590 has 80 divisors (see below), whose sum is σ = 3691762272. Its totient is φ = 274591296.

The previous prime is 1201342579. The next prime is 1201342591. The reversal of 1201342590 is 952431021.

1201342590 is a `hidden beast` number, since 1 + 20 + 13 + 42 + 590 = 666.

1201342590 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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 (1201342591) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 100269 + ... + 111608.

Almost surely, 2^1201342590 is an apocalyptic number.

1201342590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201342590 is an abundant number, since it is smaller than the sum of its proper divisors (2490419682).

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

1201342590 is a wasteful number, since it uses less digits than its factorization.

1201342590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211903 (or 211894 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1201342590 is about 34660.3893515350. The cubic root of 1201342590 is about 1063.0547311319.

The spelling of 1201342590 in words is "one billion, two hundred one million, three hundred forty-two thousand, five hundred ninety".