1420741440 has 84 divisors (see below), whose sum is σ = 4886768484. Its totient is φ = 378863616.

The previous prime is 1420741433. The next prime is 1420741547. The reversal of 1420741440 is 441470241.

1420741440 is a `hidden beast` number, since 1 + 4 + 207 + 414 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 721244736 + 699496704 = 26856^2 + 26448^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243777 + ... + 249536.

Almost surely, 2^1420741440 is an apocalyptic number.

1420741440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420741440 is an abundant number, since it is smaller than the sum of its proper divisors (3466027044).

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

1420741440 is a wasteful number, since it uses less digits than its factorization.

1420741440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493336 (or 493323 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 1420741440 is about 37692.7239663042. The cubic root of 1420741440 is about 1124.1864577558.

The spelling of 1420741440 in words is "one billion, four hundred twenty million, seven hundred forty-one thousand, four hundred forty".