11342142021 has 16 divisors (see below), whose sum is σ = 17320607744. Its totient is φ = 6467220144.

The previous prime is 11342142013. The next prime is 11342142029. The reversal of 11342142021 is 12024124311.

It is an interprime number because it is at equal distance from previous prime (11342142013) and next prime (11342142029).

It is not a de Polignac number, because 11342142021 - 2³ = 11342142013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11342142029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 573541 + ... + 592986.

It is an arithmetic number, because the mean of its divisors is an integer number (1082537984).

Almost surely, 2^11342142021 is an apocalyptic number.

It is an amenable number.

11342142021 is a deficient number, since it is larger than the sum of its proper divisors (5978465723).

11342142021 is a wasteful number, since it uses less digits than its factorization.

11342142021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167000.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 11342142021 its reverse (12024124311), we get a palindrome (23366266332).

The spelling of 11342142021 in words is "eleven billion, three hundred forty-two million, one hundred forty-two thousand, twenty-one".