142121026 has 16 divisors (see below), whose sum is σ = 224652960. Its totient is φ = 67245120.

The previous prime is 142121017. The next prime is 142121027. The reversal of 142121026 is 620121241.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 142120994 and 142121012.

It is not an unprimeable number, because it can be changed into a prime (142121027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47610 + ... + 50506.

It is an arithmetic number, because the mean of its divisors is an integer number (14040810).

Almost surely, 2^142121026 is an apocalyptic number.

142121026 is a deficient number, since it is larger than the sum of its proper divisors (82531934).

142121026 is a wasteful number, since it uses less digits than its factorization.

142121026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4209.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 142121026 is about 11921.4523444084. The cubic root of 142121026 is about 521.8585197134.

Adding to 142121026 its reverse (620121241), we get a palindrome (762242267).

The spelling of 142121026 in words is "one hundred forty-two million, one hundred twenty-one thousand, twenty-six".