142121220432 has 20 divisors (see below), whose sum is σ = 367146486240. Its totient is φ = 47373740128.

The previous prime is 142121220421. The next prime is 142121220443. The reversal of 142121220432 is 234022121241.

It is an interprime number because it is at equal distance from previous prime (142121220421) and next prime (142121220443).

It is a super-2 number, since 2×142121220432² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1480429332 + ... + 1480429427.

It is an arithmetic number, because the mean of its divisors is an integer number (18357324312).

Almost surely, 2^142121220432 is an apocalyptic number.

142121220432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

142121220432 is an abundant number, since it is smaller than the sum of its proper divisors (225025265808).

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

142121220432 is a wasteful number, since it uses less digits than its factorization.

142121220432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2960858770 (or 2960858764 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 142121220432 its reverse (234022121241), we get a palindrome (376143341673).

The spelling of 142121220432 in words is "one hundred forty-two billion, one hundred twenty-one million, two hundred twenty thousand, four hundred thirty-two".