1408287642 has 16 divisors (see below), whose sum is σ = 2844463392. Its totient is φ = 464781200.

The previous prime is 1408287641. The next prime is 1408287653. The reversal of 1408287642 is 2467828041.

It is a junction number, because it is equal to n+sod(n) for n = 1408287594 and 1408287603.

It is not an unprimeable number, because it can be changed into a prime (1408287641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1161348 + ... + 1162559.

It is an arithmetic number, because the mean of its divisors is an integer number (177778962).

Almost surely, 2^1408287642 is an apocalyptic number.

1408287642 is an abundant number, since it is smaller than the sum of its proper divisors (1436175750).

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

1408287642 is a wasteful number, since it uses less digits than its factorization.

1408287642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2324013.

The product of its (nonzero) digits is 172032, while the sum is 42.

The square root of 1408287642 is about 37527.1587253818. The cubic root of 1408287642 is about 1120.8920513264.

The spelling of 1408287642 in words is "one billion, four hundred eight million, two hundred eighty-seven thousand, six hundred forty-two".