1420542550 has 24 divisors (see below), whose sum is σ = 3019668336. Its totient is φ = 487043040.

The previous prime is 1420542547. The next prime is 1420542553. The reversal of 1420542550 is 552450241.

It is an interprime number because it is at equal distance from previous prime (1420542547) and next prime (1420542553).

It is a super-2 number, since 2×1420542550² = 4035882272721005000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420542553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2028997 + ... + 2029696.

It is an arithmetic number, because the mean of its divisors is an integer number (125819514).

Almost surely, 2^1420542550 is an apocalyptic number.

1420542550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1420542550 is an abundant number, since it is smaller than the sum of its proper divisors (1599125786).

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

1420542550 is a wasteful number, since it uses less digits than its factorization.

1420542550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4058712 (or 4058707 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 1420542550 is about 37690.0855663661. The cubic root of 1420542550 is about 1124.1339969132.

Adding to 1420542550 its reverse (552450241), we get a palindrome (1972992791).

The spelling of 1420542550 in words is "one billion, four hundred twenty million, five hundred forty-two thousand, five hundred fifty".