142402007 has 4 divisors (see below), whose sum is σ = 155347656. Its totient is φ = 129456360.

The previous prime is 142401997. The next prime is 142402019. The reversal of 142402007 is 700204241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 700204241 = 11 ⋅63654931.

It is not a de Polignac number, because 142402007 - 2⁴ = 142401991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142402007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142402027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6472808 + ... + 6472829.

It is an arithmetic number, because the mean of its divisors is an integer number (38836914).

Almost surely, 2^142402007 is an apocalyptic number.

142402007 is a deficient number, since it is larger than the sum of its proper divisors (12945649).

142402007 is a wasteful number, since it uses less digits than its factorization.

142402007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12945648.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 142402007 is about 11933.2312053358. The cubic root of 142402007 is about 522.2022075440.

Adding to 142402007 its reverse (700204241), we get a palindrome (842606248).

The spelling of 142402007 in words is "one hundred forty-two million, four hundred two thousand, seven".