1240020894 has 32 divisors (see below), whose sum is σ = 2925766656. Its totient is φ = 342862560.

The previous prime is 1240020841. The next prime is 1240020931. The reversal of 1240020894 is 4980200421.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474897 + ... + 477500.

It is an arithmetic number, because the mean of its divisors is an integer number (91430208).

Almost surely, 2^1240020894 is an apocalyptic number.

1240020894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1240020894 is an abundant number, since it is smaller than the sum of its proper divisors (1685745762).

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

1240020894 is a wasteful number, since it uses less digits than its factorization.

1240020894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952440.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 1240020894 is about 35213.9303969324. The cubic root of 1240020894 is about 1074.3431051483.

The spelling of 1240020894 in words is "one billion, two hundred forty million, twenty thousand, eight hundred ninety-four".