427124890 has 32 divisors (see below), whose sum is σ = 778928400. Its totient is φ = 168620544.

The previous prime is 427124869. The next prime is 427124897. The reversal of 427124890 is 98421724.

It is a Cunningham number, because it is equal to 20667²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 153784801 + 273340089 = 12401^2 + 16533^2 .

It is not an unprimeable number, because it can be changed into a prime (427124897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256942 + ... + 258598.

Almost surely, 2^427124890 is an apocalyptic number.

427124890 is a deficient number, since it is larger than the sum of its proper divisors (351803510).

427124890 is a wasteful number, since it uses less digits than its factorization.

427124890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 427124890 is about 20667.0000241932. Note that the first 4 decimals coincide. The cubic root of 427124890 is about 753.0982296000.

It can be divided in two parts, 4271 and 24890, that added together give a triangular number (29161 = T₂₄₁).

The spelling of 427124890 in words is "four hundred twenty-seven million, one hundred twenty-four thousand, eight hundred ninety".