70342020 has 120 divisors (see below), whose sum is σ = 252229824. Its totient is φ = 16075584.

The previous prime is 70342003. The next prime is 70342031. The reversal of 70342020 is 2024307.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 70341984 and 70342002.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8239 + ... + 14441.

Almost surely, 2^70342020 is an apocalyptic number.

70342020 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70342020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126114912).

70342020 is an abundant number, since it is smaller than the sum of its proper divisors (181887804).

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

70342020 is a wasteful number, since it uses less digits than its factorization.

70342020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6231 (or 6220 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 70342020 is about 8387.0149636208. The cubic root of 70342020 is about 412.7986597442.

Adding to 70342020 its reverse (2024307), we get a palindrome (72366327).

The spelling of 70342020 in words is "seventy million, three hundred forty-two thousand, twenty".