1423842990 has 32 divisors (see below), whose sum is σ = 3618237600. Its totient is φ = 357356544.

The previous prime is 1423842967. The next prime is 1423843009. The reversal of 1423842990 is 992483241.

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, 1395415 + ... + 1396434.

It is an arithmetic number, because the mean of its divisors is an integer number (113069925).

Almost surely, 2^1423842990 is an apocalyptic number.

1423842990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1423842990 is an abundant number, since it is smaller than the sum of its proper divisors (2194394610).

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

1423842990 is a wasteful number, since it uses less digits than its factorization.

1423842990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791876.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 1423842990 is about 37733.8440925385. The cubic root of 1423842990 is about 1125.0039150481.

The spelling of 1423842990 in words is "one billion, four hundred twenty-three million, eight hundred forty-two thousand, nine hundred ninety".