1142420550 has 24 divisors (see below), whose sum is σ = 2833203336. Its totient is φ = 304645440.

The previous prime is 1142420527. The next prime is 1142420563. The reversal of 1142420550 is 550242411.

It is a self number, because there is not a number n which added to its sum of digits gives 1142420550.

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, 3807919 + ... + 3808218.

It is an arithmetic number, because the mean of its divisors is an integer number (118050139).

Almost surely, 2^1142420550 is an apocalyptic number.

1142420550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1142420550 is an abundant number, since it is smaller than the sum of its proper divisors (1690782786).

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

1142420550 is a wasteful number, since it uses less digits than its factorization.

1142420550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7616152 (or 7616147 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1142420550 is about 33799.7122768819. The cubic root of 1142420550 is about 1045.3827646311.

Adding to 1142420550 its reverse (550242411), we get a palindrome (1692662961).

The spelling of 1142420550 in words is "one billion, one hundred forty-two million, four hundred twenty thousand, five hundred fifty".