1420429550 has 48 divisors (see below), whose sum is σ = 2820355200. Its totient is φ = 530661600.

The previous prime is 1420429529. The next prime is 1420429553. The reversal of 1420429550 is 559240241.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420429553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56921 + ... + 77979.

It is an arithmetic number, because the mean of its divisors is an integer number (58757400).

Almost surely, 2^1420429550 is an apocalyptic number.

1420429550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1420429550 is a deficient number, since it is larger than the sum of its proper divisors (1399925650).

1420429550 is a wasteful number, since it uses less digits than its factorization.

1420429550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21161 (or 21156 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 1420429550 is about 37688.5864685849. The cubic root of 1420429550 is about 1124.1041889336.

Adding to 1420429550 its reverse (559240241), we get a palindrome (1979669791).

The spelling of 1420429550 in words is "one billion, four hundred twenty million, four hundred twenty-nine thousand, five hundred fifty".